508 calculators

The well-known American author, Bill Bryson, once said: “Physics is really nothing more than a search for ultimate simplicity, but so far all we have is a kind of elegant messiness.” Physics is indeed the most fundamental of the sciences that tries to describe the whole nature with thousands of mathematical formulas. How not to get lost in all of this knowledge? How to organize it? The solution is here! Our physicists’ team constantly create physics calculators, with equations and comprehensive explanations that cover topics from classical motion, thermodynamics, and electromagnetism to astrophysics and even quantum mechanics. Are you having troubles with understanding the laws of physics? Or maybe you have to solve a complicated homework from physics classes? The Omni Calculators might be exactly what you’re looking for!

Acceleration Calculator

The acceleration calculator estimates acceleration using three different approaches – velocity difference, distance traveled over time, and net force vs. mass.

Specific Heat Calculator

Find out how much heat is required to warm up a sample with the specific heat calculator.

Velocity Calculator

Use the velocity calculator to assess how fast an object moves, given a certain distance and time.

Free Fall Calculator

Our free fall calculator can find the velocity of a falling object and the height it drops from.

Wavelength Calculator

Learn the relationship between wavelength and frequency with this wavelength calculator.

Projectile Motion Calculator

Use our projectile motion calculator to analyze a projectile in parabolic motion.

Density Calculator

Use the density calculator to instantly find how tightly packed an object's molecules are.

Ideal Gas Law Calculator

Use the ideal gas law calculator to find the pressure, volume, and temperature of a gas.

Wet Bulb Calculator

With humidity and temperature you can find out the value of the wet-bulb temperature, and if it's any different from the normal air temperature.

Kinetic Energy Calculator

If you know the mass and velocity of an object, use the kinetic energy calculator to find its energy in movement.

Potential Energy Calculator

Grab the potential energy calculator to find how much energy is stored in an object raised off the ground.

Enthalpy Calculator

The enthalpy calculator lets you find the enthalpy of any endothermic or exothermic reaction.

Gravitational Force Calculator

If you want to calculate the force between two masses, try our gravitational force calculator.

Frequency Calculator

The frequency calculator lets you quickly find the frequency, given either its period or its wavelength and velocity.

Boyle's Law Calculator

Use this Boyle's law calculator to estimate a gas's pressure and volume in an isothermal process.

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Arrow Speed Calculator

Arrow speed calculator finds the real speed of an arrow for a bow with custom parameters.

Ballistic Coefficient Calculator

Determine the ballistic coefficient for projectiles using our ballistic coefficient calculator.

Car Jump Distance Calculator

Use the car jump distance calculator to simulate car jumping with air drag force and car rotation included.

Conservation of Momentum Calculator

The conservation of momentum calculator will help you determine the initial and final speed of two colliding objects.

Displacement Calculator

Using the displacement calculator you can find the displacement using constant speed, acceleration, or a collection of different velocities.

Free Fall Calculator

Our free fall calculator can find the velocity of a falling object and the height it drops from.

Free Fall with Air Resistance Calculator

Free fall with air resistance calculator finds the time of fall, as well as the maximum and terminal velocity of an object falling to the ground under the influence of both gravity and air resistance.

Friction Calculator

The friction calculator finds the force of friction between any object and the ground.

Ground Speed Calculator

Ground speed calculator helps you find the wind correction angle, heading, and ground speed of an aircraft.

Horizontal Projectile Motion Calculator

With this horizontal projectile motion calculator, you'll quickly find out the trajectory, time of flight, and projectile range.

Impulse and Momentum Calculator

The impulse and momentum calculator can find the impulse of an object that changes its velocity.

Inclined Plane Calculator

Use the inclined plane calculator to solve exercises about objects sliding down an inclined plane with a friction coefficient.

Magnitude of Acceleration Calculator

Check our magnitude of acceleration calculator to estimate the value of acceleration swiftly. You can choose between three options: mass and force, acceleration components, or velocity difference.

Maximum Height Calculator – Projectile Motion

Use this maximum height calculator to figure out what is the maximum vertical position of an object in projectile motion.

Momentum Calculator

The momentum calculator evaluates the linear momentum of an object based on its mass and velocity.

Polar Moment of Inertia Calculator

Use this tool to calculate the polar moment of inertia of a solid or hollow circular section.

Projectile Motion Calculator

Use our projectile motion calculator to analyze a projectile in parabolic motion.

Projectile Range Calculator

Find out how far the object can fly with this projectile range calculator.

Quarter Mile Calculator

Given a vehicle's power and weight, you can use this quarter-mile calculator to estimate the elapsed time and final speed over a 1/4-mile distance.

Rolling Resistance Calculator

We let you estimate the rolling resistance of any vehicle with the rolling resistance calculator, to make sure you are running as efficiently as possible!

SUVAT Calculator

If you're dealing with an object that is constantly accelerating, this SUVAT calculator will sort you right out.

Terminal Velocity Calculator

Determine the maximum velocity achievable by a falling object using the terminal velocity calculator.

Time of Flight Calculator – Projectile Motion

Check out how long a projectile remains in the air with this time of flight calculator.

Velocity Calculator

Use the velocity calculator to assess how fast an object moves, given a certain distance and time.

Acceleration Calculator

The acceleration calculator estimates acceleration using three different approaches – velocity difference, distance traveled over time, and net force vs. mass.

Angle of Banking Calculator

Find how to design the perfect road (and much more) with our angle of banking calculator

Force Calculator

Force calculator helps you calculate force from Newton's second law of motion and explains the basic aspects of force.

Gravitational Force Calculator

If you want to calculate the force between two masses, try our gravitational force calculator.

Newton's Second Law Calculator

With the Newton's second law calculator, you can explore the famous second law of motion thanks to Isaac Newton.

Normal Force Calculator

Find out the normal force value of an object on a flat and inclined surface with our normal force calculator.

Stopping Distance Calculator

Stopping distance calculator finds the distance your car travels before it comes to a stop.

Tension Calculator

This tension calculator will help you determine the tension forces acting in a rope, string, or any tension members that undergo pulling or stretching forces. You can calculate for tension forces in ropes pulling objects on a frictionless surface as well as tension forces in ropes that are suspending an object.

Car Center of Mass Calculator

Use this car center of mass calculator and find the exact position of the center of gravity of your car.

Pressure Calculator

Use the pressure calculator to find the pressure exerted by a force on a specific area.

Reduced Mass Calculator

Try the reduced mass calculator to easily calculate the reduced mass in a two-body problem.

Weight on Other Planets Calculator

With this weight on other planets calculator, you can check how much you'd weigh if you landed on another planet within our Solar system.

Bullet Energy Calculator

Find out how much energy a bullet fired from a weapon carries using this bullet energy calculator.

Elastic Potential Energy Calculator

Use the elastic potential energy calculator to determine the potential energy of a spring.

Impact Energy Calculator

Calculate the force and energy involved with impact loads using our impact energy calculator.

Kinetic Energy Calculator

If you know the mass and velocity of an object, use the kinetic energy calculator to find its energy in movement.

Potential Energy Calculator

Grab the potential energy calculator to find how much energy is stored in an object raised off the ground.

Power-to-Weight Ratio Calculator

Our power-to-weight ratio calculator allows you to compare the performance of different motor vehicles.

Signal-to-Noise Ratio Calculator

The SNR (signal-to-noise ratio) calculator computes the ratio of the desired signal to the level of background noise.

TNT Equivalent Calculator

Use the TNT equivalent calculator to determine the TNT factor and compare different explosives.

Work Calculator

Do you want to calculate work (physics) with very little effort? With Omni's work calculator we'll do the (computational) work for you 😉

Work and Power Calculator

Our work and power calculator can determine how much energy you need to perform a given amount of work.

Angular Acceleration Calculator

Use this angular acceleration calculator to compute angular acceleration of an object in circular motion.

Angular Displacement Calculator

Angular displacement calculator is the one-stop tool to calculate angular displacement using three different formulas based on your requirements.

Angular Frequency Calculator

Use the angular frequency calculator to find the angular frequency (also known as angular velocity) of all rotating and oscillating objects.

Angular Momentum Calculator

This angular momentum calculator allows you to calculate the angular momentum of an object, either by using the moment of inertia and angular velocity, or by using the mass and velocity of the object along with the radius of the curved path.

Angular Velocity Calculator

This angular velocity calculator finds angular velocity in two ways. You can either use the angle change in the period of time or apply the linear velocity and a given radius.

Centrifugal Force Calculator

Use our centrifugal force calculator to determine the force acting on a rotating object.

Centrifuge Calculator

The centrifuge calculator lets you convert between relative centrifugal force (RCF) and revolutions per minute (RPM) of a motor in a centrifuge.

Centripetal Force Calculator

Check this centripetal force calculator if you want to estimate the centripetal force acting upon a body in circular motion.

Circular Motion Calculator

Use the circular motion calculator to determine the parameters like frequency, speed, angular velocity, and centripetal acceleration.

Coriolis Effect Calculator

The Coriolis effect calculator can find the inertial force acting on moving objects in a rotating reference frame.

Damping Ratio Calculator

The damping ratio calculator will help you find the damping ratio and establish if the system is underdamped, overdamped or critically damped.

Flywheel Energy Storage Calculator

Our flywheel energy storage calculator allows you to calculate the capacity of an interesting type of battery!

Frequency Calculator

The frequency calculator lets you quickly find the frequency, given either its period or its wavelength and velocity.

Harmonic Wave Equation Calculator

The harmonic wave equation calculator helps you find the displacement of any point along an oscillating wave.

Kinetic Energy of a Pendulum Calculator

This calculator and video combination helps you compute the kinetic energy of a pendulum so that you can better understand how to use a pendulum in the real world.

Mass Moment of Inertia Calculator

If you want to find out what is the moment of inertia of an object, our mass moment of inertia calculator is here to help you.

Physical Pendulum Calculator

The physical pendulum calculator helps you compute the period and frequency of a physical pendulum.

Rotational Kinetic Energy Calculator

The rotational kinetic energy calculator finds the energy of an object in rotational motion.

Rotational Stiffness Calculator

Determine the resistance of a body to rotation using the rotational stiffness calculator.

Simple Harmonic Motion Calculator

Simple harmonic motion calculator analyzes the motion of an oscillating particle.

Simple Pendulum Calculator

The simple pendulum calculator finds the period and frequency of a pendulum.

Torque Calculator

If you want to find out how the object rotates when subject to a force, our torque calculator is here to help you.

Wavelength Calculator

Learn the relationship between wavelength and frequency with this wavelength calculator.

Angular Resolution Calculator

The angular resolution calculator finds out the angular resolution of a lens.

Aperture Area Calculator

The aperture area calculator helps you to compute the aperture area of a lens.

Binoculars Range Calculator

With this binoculars range calculator, you can find the distance to the object if you know its height.

Blackbody Radiation Calculator

Calculate the spectral radiance of a blackbody in watts or photons per second using this blackbody radiation calculator.

Bragg's Law Calculator

With this Bragg's law calculator, you can compute the angle of an incident X-ray for which the reflected wave from a crystal has the maximum intensity.

Brewster's Angle Calculator

With this Brewster's angle calculator, you can estimate the angle at which reflected light will be perfectly polarized.

Contact Lens Vertex Calculator

Find out what power contact lens will fit you using this contact lens vertex calculator!

Diffraction Grating Calculator

Diffraction grating calculator analyzes what happens when a light ray meets a surface with multiple apertures.

Diopter Calculator

The diopter calculator efficiently determines the optical power of a lens in diopters using its focal length.

Distance to Horizon Calculator

Learn the geometry of horizons with our distance to the horizon calculator: on Earth or anywhere else in the Solar System!

Earth Curvature Calculator

The Earth curvature calculator lets you find the distance from you to the horizon, as well as the height of an object that is partially hidden behind it.

Index of Refraction Calculator

If you need to find the index of refraction of any substance, the index of refraction calculator is here to help you.

Laser Beam Divergence Calculator

Our laser beam divergence calculator will tell you exactly how much your beam will expand!

Laser Beam Expander Calculator

Our laser beam expander calculator will teach you everything you need to know about these simple devices.

Laser Brightness Calculator

With our laser brightness calculator, you can find the radiance of a gaussian beam or compare two different lasers to see which one is brighter.

Laser Linewidth and Bandwidth Calculator

With our laser linewidth and bandwidth calculator, you will learn how much your laser pointer deviates from an ideal monochromaticity.

Laser Beam Spot Size Calculator

Our laser beam spot size calculator will find out how small a laser beam can be.

Lens Maker Equation Calculator

The lens Maker Equation Calculator finds out the focal length of a specific lens.

Lumen Calculator (Lumen to Lux to Candela)

The Lumen calculator converts between lumens, lux, and candelas.

Lux to Foot Candles Converter

With our easy-to-use converter, lux to foot candles conversion will never again cause you any problems!

Malus Law Calculator

With this Malus law calculator, you can find the intensity of light that passes through the polarizer, taking into account the direction of its initial polarization.

Mirror Equation Calculator

The mirror equation calculator helps you find the unknown among the object position, image position, and focal length of a mirror.

Speed of Light Calculator

Our speed of light calculator can help you to calculate the distance light can travel in a fixed time.

Telescope Field of View Calculator

If you want to know how wide is your window on the stars, our telescope field of view calculator is the right tool for you!

Telescope Magnification Calculator

Use this telescope magnification calculator to estimate the magnification, resolution, brightness, and other properties of the images taken by your scope.

Thin-Film Optical Coating Calculator

This thin-film optical coating calculator will calculate the optical path difference and reflectivity at the coating interface.

Thin Lens Equation Calculator

With this thin lens equation calculator, you can find the focal length of your lens.

Acoustic Impedance Calculator

The acoustic impedance calculator will help you determine a material's specific acoustic impedance and the intensity reflection and transmission coefficients of a sound wave at the boundary of two materials.

Alfvén Velocity Calculator

The Alfvén velocity calculator helps you compute the velocity of a magnetohydrodynamic wave, a type of plasma wave.

Beat Frequency Calculator

The beat frequency calculator is your one-stop tool to calculate the beat frequency of two waves.

Critical Damping Calculator

The critical damping calculator will help you find out the critical damping coefficient of a system.

dB Calculator

Use our dB calculator to find the sound pressure level and intensity level in decibels.

dB Gain Calculator

Determine dB gain by entering initial and final power levels into the dB gain calculator.

Distance Attenuation Calculator

The distance attenuation calculator finds how the sound level in dB decreases with distance from the sound source.

Doppler Effect Calculator

Our Doppler effect calculator allows you to calculate the frequency of sound if either the source of sound or the observer is moving.

Helmholtz Resonator Calculator

Find the resonant frequency of an acoustic cavity with out Helmholtz resonator calculator!

Modulation Calculator

This modulation calculator helps find the amplitude modulation index using the amplitude of the modulation signal and the carrier signal. You can also calculate the frequency modulation index.

Reverberation Time Calculator

The reverberation time calculator works out what is the time required for the sound intensity to decrease by 60 dB.

Sound Absorption Coefficient Calculator

The sound absorption coefficient calculator determines the absorption coefficient via absorbed and incident sound intensities. It also calculates the total room sound absorption and the average sound absorption.

Sound Wavelength Calculator

Use the sound wavelength calculator to study the behavior of sound waves in different mediums.

Speed of Sound Calculator

Check with our speed of sound calculator how the speed of sound in water or air changes with temperature.

Speed of Sound in Solids Calculator

Determine the speed of sound wave propagating through different materials using speed of sound in solids calculator.

Angle of Repose Calculator

The angle of repose calculator can be a valuable tool to forecast the behavior of piles of granular materials.

Angle of Twist Calculator

This angle of twist calculator computes the twist angle of a shaft, given the shaft length, polar moment, torque, and shear modulus.

Bend Allowance Calculator

Obtain an estimate of the bend allowance given the material thickness, bend angle, inside radius, and k-factor for a given material with our bend allowance calculator.

Brinell Hardness Number Calculator

Determine the indentation hardness of a material using the Brinell hardness number calculator.

Bulk Modulus Calculator

Use our bulk modulus calculator to know the relationship between bulk stress, bulk strain, and bulk modulus.

Copper Wire Weight Calculator

Enter the dimensions of a copper wire into the copper wire weight calculator to get its weight.

Density Calculator

Use the density calculator to instantly find how tightly packed an object's molecules are.

Elastic Constants Calculator

The elastic constants calculator can help you explore the relationships between the moduli of elasticity for isotropic materials.

Elongation Calculator

Calculate the elongation percentage and determine if the material would fail using the elongation calculator.

Factor of Safety Calculator

The factor of safety calculator obtains the ratio of an object's or structure's maximum strength to its design load, to determine how safe it is. Read on to learn more about factor of safety and its applications.

Gold Weight Calculator

Use the gold weight calculator to determine the amount of precious metal you need and its cost for DIY projects.

Hoop Stress Calculator

Determine the stresses in thin walled shells (spheres and cylinders) using the hoop stress calculator.

Impact Test Calculator

The impact test calculator determines the energy absorbed in Izod and Charpy impact tests.

Intrinsic Carrier Concentration Calculator

Omni's intrinsic carrier concentration calculator allows you to work out the carrier concentration in intrinsic semiconductors.

Natural Frequency Calculator

The natural frequency calculator quickly computes the unperturbed frequency of vibration for multiple systems!

Number Density Calculator

Use this number density calculator to compute the charge carrier number density of specific conductors.

Poisson's Ratio Calculator

The Poisson's ratio calculator can find the Poisson's ratio either as a proportion of lateral and axial strain or from the shear and elasticity moduli.

Principal Stress Calculator

This principal stress calculator helps you calculate the amount of normal stress acting on a single major plane. Find the maximum, minimum, and angle of principal stress using this calculator.

Rockwell Hardness Conversion Calculator

Calculate or convert Rockwell hardness number to different hardness scales using the Rockwell hardness conversion calculator.

Section Modulus Calculator

Use this tool to calculate the section modulus, second area moment, and neutral axis of many structural profiles, given their dimensions.

Shear Modulus Calculator

Use this tool to calculate the shear modulus of a cubic element, given its dimensions, force applied, and deformation.

Shear Strain Calculator

Use this tool to calculate the shear strain produced by shear forces, stresses, and twisting couples in circular shafts.

Shear Stress Calculator

Use our shear stress calculator to get the shear stress value of a beam subjected to a transverse load or a torque.

Shear Wave Velocity Calculator

Use the shear wave velocity calculator to determine the velocity of a shear wave propagating in the body.

Slenderness Ratio Calculator

Use the slenderness ratio calculator to determine the slenderness ratio of a column by entering its length and cross-sectional dimensions.

Specific Gravity Calculator

Use this specific gravity calculator to find the specific gravity of different materials and see whether they will float or sink.

Stiffness Matrix Calculator

Determine the element stiffness matrix for a truss, beam, or frame element using our stiffness matrix calculator.

Stress Calculator

Use the stress calculator to find the stress, strain and modulus of elasticity of an object.

Stress Concentration Factor Calculator

Use this stress concentration factor calculator to estimate the localized high stresses in the regions of geometric discontinuities.

Thermal Stress Calculator

Determine the stress on an object due to heating or cooling using the thermal stress calculator.

Torsional Constant Calculator

Use our torsional constant calculator to find the torsional constant of many structural profiles subjected to torsion.

Torsional Stiffness Calculator

Use this tool to calculate the torsional stiffness by inputting the torque and the twist angle or the shear modulus, polar moment, and beam length.

True Strain Calculator

Convert engineering stress-strain values into their true counterparts using the true strain calculator.

Vickers Hardness Number Calculator

Estimate the material hardness for your test specimen using the Vickers hardness number calculator.

Volume to Mass Calculator

The volume to mass calculator has dozens of item densities that will allow you to convert volume to mass or mass to volume whenever you need.

Von Mises Stress Calculator

The von Mises stress calculator can help you predict if a material will yield under complex loading conditions.

Young's Modulus Calculator

Quickly find out the elastic modulus from stress and strain values with our Young's modulus calculator!

Belt Length Calculator

The belt length calculator will tell you the length of a belt spread out between two pulleys.

BMEP Calculator (Brake Mean Effective Pressure Calculator)

Calculate engine efficiency with our BMEP calculator using the BMEP formula. Accurate and easy to use for all your brakes mean effective pressure needs.

Carburetor CFM Calculator

This carburetor cfm calculator will help you to estimate the correct carburetor size for your engine.

Crawl Ratio Calculator

Calculate the crawl ratio of a vehicle from the transmission ratio, transfer case ratio, and axle gear ratio.

Engine Displacement Calculator

Determine the capacity of the engine using engine displacement calculator.

Exhaust Diameter Calculator

Use the engine's RPM and cylinder's volume to calculate the exhaust diameter of your vehicle.

Fulcrum Calculator

Use this fulcrum calculator to determine a lever's fulcrum location from the load you want to lift.

Gear Ratio Calculator

This gear ratio calculator determines the rate of mechanical advantage or disadvantage a gear train produces in a gear system. Read on to learn more about gear ratio and its importance in our lives.

Linear Actuator Force Calculator

Our linear actuator force calculator computes the maximum force required for the linear actuator.

Mechanical Advantage Calculator

Mechanical advantage calculator finds out the force amplification when using levers, pulleys, screws, wedges, ramps, and wheels & axles.

NPSH Calculator – Net Positive Suction Head

The NPSH calculator – net positive suction head – is a handy tool that will help you obtain the available NPSH of your system, so you can avoid having cavitation in your pump.

Piston Speed Calculator

Our piston speed calculator calculates the mean speed a piston moves in the cylinder bore.

Prop Pitch Calculator

Use this tool to calculate the prop pitch of a boat from its speed, gear ratio, engine speed, and propeller slip.

Pulley Calculator

Pulley calculator finds all parameters of a belt drive system: the RPM, speed, belt length, belt tension, and torque.

Pump Horsepower Calculator

Determine the hydraulic and shaft power of pumps using the pump horsepower calculator.

Speeds and Feeds Calculator

This speeds and feeds calculator will help you set the rotation speed and feed rate of your machine tool, so you get fantastic results, whether you are drilling, milling, or boring.

Spring Calculator

The famous spring calculator helps you determine the relationship between spring deformation and the force or torque applied.

Spring Rate Calculator

The spring rate calculator can help you obtain the spring rate (spring constant) for any given spring.

Torsion Spring Calculator

Omni's torsion spring calculator makes calculating the parameters of such a device quick and easy!

Twist Rate Calculator

Use the twist rate calculator to estimate the bullet stability factor and the right twist rate for the bullet.

Wing Loading Calculator

Determine the wing loading parameter to kick-start your aircraft design process using the wing loading calculator.

Alien Civilization Calculator

The alien civilization calculator explores the existence of extraterrestrial civilizations by comparing two models: the Drake equation and the Astrobiological Copernican Limits👽

Delta V Calculator

How much speed do you need to move in space? Find it out with our delta-v calculator!

Earth Orbit Calculator

This Earth orbit calculator determines the speed and orbital period of a satellite at a given height above average Earth sea level.

Escape Velocity Calculator

Use our escape velocity calculator to find out the speed required to leave the surface of any planet.

Exoplanet Discovery Calculator

The exoplanet discovery calculator allows you to play around and discover the calculations that got a Nobel Prize in 2019 for the discovery of planets outside the solar system.

Hohmann Transfer Calculator

Hohmann transfer calculator lets you find the best fuel-efficient transfers between two circular orbits.

Rocket Equation Calculator

The rocket equation calculator helps you estimate the final velocity of a rocket.

Kepler's Third Law Calculator

Use this Kepler's third law calculator to find the relationship between a planet's orbital period and it semi-major axis (or mean orbital radius).

Orbital Period Calculator

Enter the orbital period calculator, where you can calculate the orbital period of a binary system, a satellite around the Earth, and much more while learning about the universe and the laws that rule it.

Orbital Velocity Calculator

Use our orbital velocity calculator to estimate the parameters of orbital motion of the planets.

Rocket Thrust Calculator

If you want to calculate the net thrust generated by a jet rocket engine, the rocket thrust calculator is the easiest way to do it; you don't need to learn rocket physics.

Specific Impulse Calculator

Estimate how efficiently an engine generates thrust using the specific impulse calculator.

Synodic Period Calculator

Use our synodic period calculator to determine the synodic or the sidereal periods of a planet.

Thrust to Weight Ratio Calculator

Estimate the thrust to weight ratio for real aircraft or your designs using the thrust to weight ratio calculator.

UFO Travel Calculator

Use the UFO travel calculator to design a fast-moving UFO and estimate its performance.

Black Hole Collision Calculator

The Black Hole Collision Calculator lets you see the effects of a black hole collision, as well as revealing some of the mysteries of black holes, come on in and enjoy!

Black Hole Temperature Calculator

Use the black hole temperature calculator to learn the black body temperature of a black hole from just its mass.

Drake Equation Calculator

Where is everybody? Learn how to calculate the probability of another civilization existing somewhere in our Galaxy with Omni's Drake equation calculator.

Hubble Law Distance Calculator

Come on into the Hubble law distance calculator where you can find the answers for the questions like what is the Hubble's Law and what is the value of the Hubble constant.

Light Year Calculator

Our light year calculator can help you calculate the distance light can travel in a certain amount of time.

Luminosity Calculator

The luminosity calculator finds a star's luminosity, absolute magnitude, and apparent magnitude.

Olber's Paradox

Why is the night sky dark, only dotted with shiny stars? Olber's paradox is a titillating problem with a clear and satisfying solution.

Parallax Calculator

Use the parallax calculator to determine the distance between the earth and the stars.

Radiation Pressure Calculator

Use the radiation pressure calculator to find the pressure that arises from electromagnetic radiation.

Redshift Calculator

With our redshift calculator, you can determine the magnitude of redshift – an interesting phenomenon in astrophysics.

Schwarzschild Radius Calculator

Calculate the gravitational acceleration at the event horizon of a black hole of a given mass using the Schwarzschild radius calculator.

Bug-Rivet Paradox

Is the bug going to make it out alive? We're not sure: after all, it's fighting against Einstein. Solve with us the challenging bug-rivet paradox!

Electron Speed Calculator

The electron speed calculator helps you estimate both the classical and relativistic speeds of an electron.

E = mc² Calculator

Explore Einstein's famous E=mc² equation with our calculator and understand the mass-energy equivalence easily.

Gravitational Time Dilation Calculator

With this gravitational time dilation calculator you can check how much time slows down by near big objects.

Length Contraction Calculator

Discover how length is relative to the point of view with our calculator, exploring the relativity of length in physics accurately and easily.

Relativistic Kinetic Energy Calculator

The relativistic kinetic energy calculator finds the kinetic energy of an object traveling at a speed similar to the speed of light.

Space Travel Calculator

With the space travel calculator, you can plan your journey to another star system or even another galaxy.

Time Dilation Calculator

Discover how time varies at high speeds with the Time Dilation Calculator – your tool for delving into the realms of special relativity.

Velocity Addition Calculator

Use the velocity addition calculator to discover that we cannot just add the velocities.

Acceleration in the Electric Field Calculator

Use the acceleration in the electric field calculator to compute the acceleration of a charged particle subjected to the electric field.

AC Wattage Calculator

This AC wattage calculator allows you to calculate the AC wattage from volts and amps.

Capacitance Calculator

Use the capacitance calculator to find the capacitance of a parallel-plate capacitor.

Capacitive Reactance Calculator

Use the capacitive reactance calculator whenever you want to find a capacitor's reactance in an AC circuit.

Conductivity to Resistivity Calculator

Calculate the conductivity of a material from its resistivity and vice-versa using the conductivity to resistivity calculator.

Coulomb's Law Calculator

Use the Coulomb's law calculator to determine the electrostatic force between two charged particles.

Cutoff Frequency Calculator

Use the cutoff frequency calculator to work out the cutoff frequencies of different filter circuits.

Cyclotron Frequency Calculator

Unlock precision in physics! Use our cyclotron frequency calculator now to accurately determine cyclotron velocity and frequency.

Delta to Wye Conversion

This delta to wye conversion calculator will help you convert delta networks of resistors to wye networks and vice versa.

Drift Velocity Calculator

Use the Drift Velocity Calculator to compute the velocity of charge carriers which flow through a wire.

Electrical Power Calculator

The electrical power calculator helps you compute the power consumed by electrical devices.

Electric Field Calculator

The electric field calculator finds the magnitude of the electric field generated by a point charge.

Electric Motor Torque Calculator

The electric motor torque calculator provides the relation between rotational speed, power, and torque in the shaft.

Electric Potential Calculator

The electric potential calculator allows you to work out the electric potential at a point either due to a single point charge or a system of point charges.

Energy Density of Fields Calculator

Use the energy density of fields calculator to compute the energy density carried by electric and magnetic fields.

Excess Electrons Calculator

With the excess electron calculator, you will learn how to find the number of electrons missing or in excess, which causes a given charge.

Free Space Path Loss Calculator

The free space path loss calculator allows you to predict the strength of a radio frequency signal emitted by an antenna at any given distance.

Fresnel Zone Calculator

The cool Fresnel zone calculator helps you determine the first Fresnel zone so you can keep your signal transmission as strong as possible. It also determines the other Fresnel zones, if you need them.

Gauss's Law Calculator

Our Gauss's law calculator gives you the exact electrical flux through a closed surface around an electric charge.

Hall Coefficient Calculator

The Hall Coefficient Calculator computes the Hall coefficient unveiling the nature of the charge carriers in conductors.

hp to amps Calculator

This hp to amps calculator helps you convert horsepower (hp) to electric current in amperes (amps). It can also work as the amps to hp converter.

Inductive Reactance Calculator

Use the inductive reactance calculator to work out the impedance of a purely inductive circuit.

Insertion Loss Calculator

Compute the insertion loss of a two-port network using the insertion loss calculator.

Internal Resistance Calculator

Calculate the internal resistance of a battery using the internal resistance calculator.

kVA Calculator

Use this kVA calculator to find the value of apparent power from the operating voltage and current in a system.

Lorentz Force Calculator

Use the Lorentz force calculator to compute the effect of the magnetic field on charged particles.

Magnetic Declination Calculator

Align your compass correctly with this magnetic declination calculator!

Magnetic Dipole Moment Calculator

Calculate the magnetic dipole moment of a current-carrying loop or a solenoid with our magnetic dipole moment calculator.

Magnetic Field of a Straight Current-Carrying Wire Calculator

The magnetic field of a straight current-carrying wire calculator finds the strength of the magnetic field produced by straight wire.

Magnetic Permeability Calculator

Use this magnetic permeability calculator to compute a material's permeability, relative permeability, and susceptibility.

Power Dissipation Calculator

Use the power dissipation calculator to calculate the power dissipated by the resistors and the power supplied by the battery.

Power Factor Calculator

The power factor calculator helps you to describe the relationship between the real, reactive, and apparent power in an AC circuit.

Skin Depth Calculator

The skin depth calculator allows you to determine the skin effect in conductors for any signal frequency.

Volt to Electron Volt Calculator

This volt to electron volt calculator allows you to convert volts to electron volts with either coulombs or elementary charges.

VSWR Calculator (Voltage Standing Wave Ratio Calculator)

The VSWR calculator helps in finding the reflection coefficient, return loss, and mismatch loss from the VSWR value, or vice versa.

Watt Calculator

Our watt calculator helps you understand the relationship between power, voltage, current and resistance. It also provides you with some facts about the electrical power unit - the watt. No more asking watt's that!

Watts to Amps Calculator

Watts to amps calculator helps you convert the electric power into amperage, or vice versa, depending on the applied kind of current.

Watts to Lux Calculator

Watts to lux calculator will help you measure how much luminous flux is spread over a given area.

Breaker Size Calculator

The breaker size calculator will help you obtain the correct circuit breaker size for your home panel based on the electrical load.

Bridge Rectifier Calculator

You can use this bridge rectifier calculator to compute various rectification attributes of the conversion of AC (alternating current) into DC (direct current).

Capacitor Charge Time Calculator

Calculate the charge time of your capacitor for the five multiples of the time constant and more.

Capacitor Calculator

Try the capacitor calculator if you want to find the meaning of the capacitor code and the value of its capacitance. You can also evaluate what is the charge stored in the capacitor for a specific voltage.

Capacitor Energy Calculator

Check this capacitor energy calculator to find the energy and electric charge values stored in a capacitor.

Capacitors in Series Calculator

Use this capacitors in series calculator to work out the resulting capacitance in a circuit.

Capacitor Size Calculator

The capacitor size calculator gives you the capacitance required to handle a given voltage in an electric motor, considering a specific start-up energy.

Current Divider Calculator

Use the current divider calculator to estimate how the current divides across each branch of different parallel circuits: resistive, inductive, or capacitive.

Generator Power Calculator

The generator power calculator helps calculate the power requirement based on the current readings of various equipment and appliances or the power supply voltage of the premises.

Helical Coil Calculator

Use the helical coil calculator to estimate the inductance and volume of coil springs.

High Pass Filter Calculator

The high pass filter calculator assists you in designing and building a high-pass filter circuit. Includes passive (RC and RL) and active (op-amp based) filters.

Ideal Transformer Calculator

Learn how a transformer works and calculate accurately with our ideal voltage transformer calculator. Fast, reliable, and user-friendly

Inductor Energy Storage Calculator

With this inductor energy storage calculator, you'll quickly find the magnetic energy stored in an electrical circuit with inductance.

Inductors in Parallel Calculator

Use Omni's inductors in parallel calculator to work out the equivalent inductance in a parallel circuit.

Inductors In Series Calculator

Use Omni's inductors in series calculator to work out the equivalent inductance of a series circuit.

J-Pole Antenna Calculator

Design your optimal J-pole antenna for a chosen frequency using our smart J-pole antenna calculator.

LED Resistor Calculator

LED resistor calculator tells you what resistor you should use when connecting LEDs in series or parallel.

Low Pass Filter Calculator

The low pass filter calculator helps you design and build a low-pass filter circuit, with support for passive (RC and RL) as well as active (op-amp based) filters.

Magnetic Force Between Current-Carrying Wires Calculator

The magnetic force between current-carrying wires calculator determines whether two parallel wires with current will attract or repel each other and how strong this force is.

Magnetic Force on a Current-Carrying Wire Calculator

Use the electromagnetic force on current-carrying wire calculator to compute the strength of the electromagnetic force acting on a wire with current flowing through it.

MOSFET Calculator

Discover how to calculate the current of a MOSFET in its three regimes of operation with our MOSFET calculator!

MOSFET Threshold Voltage Calculator

Learn how to calculate the most critical parameter of a MOSFET with our MOSFET threshold voltage calculator.

555 Timer Calculator

The 555 timer calculator allows you to find the times of the output of a 555 astable mode timer circuit and more.

Noise Figure Calculator

The noise figure calculator takes the signal-to-noise ratio (SNR) at input and output to calculate the noise figure value in decibels.

Ohm's Law Calculator

Ohm's Law calculator let's you explore the relationships between power, voltage, current, and resistance.

Parallel Capacitor Calculator

Check out this parallel capacitor calculator to evaluate the resulting capacity in this kind of circuit.

Parallel Resistor Calculator

Find the equivalent resistance of a parallel circuit with the parallel resistor calculator.

Photon Detection Efficiency Calculator (SiPM)

Photon detection efficiency calculator is a handy tool that allows for a quick conversion between responsivity and Photon Detection Efficiency (PDE) in Silicon Photomultipliers (SiPMs).

RC Circuit Calculator

This RC circuit calculator will help you calculate the characteristic frequency of the RC circuit.

Resistor Color Code Calculator

Find out the resistance value with this resistor color code calculator! Just choose the resistor type, select the colors, and the tool will display the resistance, tolerance, and range on the spot.

Resistor Noise Calculator

Use our resistor noise calculator to find out how much RMS noise signal resistors will generate.

Resistor Wattage Calculator

Use the resistor wattage calculator to determine the power dissipated by a resistor.

Resonant Frequency Calculator

Use the resonant frequency calculator to check out the resonant frequency in an LC circuit.

RLC Circuit Calculator

With this RLC circuit calculator, you can calculate the characteristic frequency of the RLC circuit and its Q-factor.

RLC Impedance Calculator

Try this RLC impedance calculator to find the impedance of the resistor, capacitor, and inductor in series or in parallel.

RMS Voltage Calculator

The RMS voltage calculator lets you find the root mean square of common waveforms.

Series Resistor Calculator

Determine the equivalent resistance of a series circuit with the series resistor calculator.

Shockley Diode Calculator

Use the Shockley diode calculator to obtain the I-V characteristic of a real or ideal diode.

Solenoid Inductance Calculator

The solenoid inductance calculator helps you to compute the self-inductance of a solenoid.

Solenoid Magnetic Field Calculator

The Solenoid Magnetic Field Calculator helps you find the magnetic field inside a long solenoid.

Spherical Capacitor Calculator

Use this spherical capacitor calculator to determine the capacitance of a spherical capacitor filled with a dielectric.

Three Phase Calculator

The three-phase calculator helps you estimate apparent, active, and reactive powers in an AC circuit.

Transformer Sizing Calculator

Use our transformer sizing calculator to obtain the minimum kVA needed to power your load.

Transistor Biasing Calculator

Learn the operating modes of one of the most important electronic components with our transistor biasing calculator.

Voltage Divider Calculator

The voltage divider calculator is a comprehensive tool that tells you about the characteristics of output signals produced in one of the simplest circuits, known as voltage dividers.

Voltage Regulation Calculator

Our voltage regulation calculator will help you find the ratio and percentage change of voltage regulation.

Wire Gauge Calculator

This wire gauge calculator computes the diameter, cross-sectional area, and resistance per unit length of a wire once given a wire gauge number in either the American Wire Gauge (AMG) or Standard Wire Gauge (SWG) systems.

Wire Resistance Calculator

The wire resistance calculator determines the resistance and conductance of a wire.

Wire Size Calculator

The wire size calculator will help you choose the correct electrical cable for your next installation.

Archimedes' Principle Calculator

Archimedes' principle calculator allows you to calculate the buoyant force and the properties of an object when it is completely submerged in a fluid.

Bernoulli Equation Calculator

Bernoulli equation calculator helps you determine the speed and pressure, as well as the flow rate, of an incompressible fluid.

Broad Crested Weir Calculator

Calculate the discharge over the weir using our broad crested weir calculator.

Buoyancy Calculator

Buoyancy calculator finds the buoyant force acting on an object immersed in water.

Coefficient of Discharge Calculator

Estimate the ratio between theoretical and actual discharge values using the coefficient of discharge calculator.

Cv Flow Calculator

This Cv flow calculator will help you understand how the capacity of a valve to let fluid flow through is measured.

Darcy's Law Calculator

Use our Darcy's law calculator to calculate the fluid flow rate through a porous medium.

Darcy Weisbach Calculator

Estimate the fluid pressure drop across a pipe using the Darcy Weisbach calculator.

Differential Pressure Calculator

Determine the fluid flow rate using the differential pressure calculator.

Drag Equation Calculator

The drag equation calculator helps you compute a force exerted on a moving object immersed in a fluid.

Fan Calculator

Easily calculate the airflow, pressure or power draw of a fan. We will also teach you some fun facts about fans, enjoy!

Flow Rate Calculator

Determine the volumetric and mass flow rate of a fluid with our flow rate calculator.

Friction Factor Calculator

Use the friction factor calculator to determine the friction factor using the Moody approximation.

Friction Loss Calculator

Calculate the friction loss in pipes for different materials using the Hazen-Williams equation.

Froude Number Calculator

Determine the Froude number for the fluid flow using the Froude number calculator.

Hydraulic Conductivity Calculator

Determine the speed of fluid flow through the soil using the hydraulic conductivity calculator.

Hydraulic Gradient Calculator

Determine the change in the head with respect to the distance using this hydraulic gradient calculator.

Hydraulic Jump Calculator

The hydraulic jump calculator analyzes the jump from a supercritical to a subcritical flow in a rectangular channel.

Hydraulic Pressure Calculator

The hydraulic pressure calculator finds the parameters of a basic hydraulic system.

Hydraulic Radius Calculator

The hydraulic radius calculator finds the wetted perimeter and hydraulic radius for five different channel shapes.

Hydrostatic Pressure Calculator

Our hydrostatic pressure calculator is here to help you if you want to find the hydrostatic pressure at a certain depth.

Knudsen Number Calculator

Use this Knudsen number calculator to calculate the Knudsen number which helps you determine which mechanics formulation should be used.

Lift Coefficient Calculator

Determine the coefficient of lift using the lift equation for your wing design using lift coefficient calculator.

Magnus Force Calculator

Use our Magnus force calculator to find the total force generated by the Magnus effect on a spinning cylinder.

Manometer Calculator

This manometer calculator will determine pressures at specific points in any common manometer. Manometers are simple to use and knowing how to use them is a fantastic way to learn more about fluid statics.

Oblique Shock Calculator

Determine the properties of a gas for an oblique shock wave using the oblique shock calculator.

Open Channel Flow Calculator

This open channel flow calculator will help you determine the water flow rate of open channels for any typical cross-sectional area of water flow.

Orifice Flow Calculator

Determine the flow rate of liquid through an orifice using the orifice flow calculator.

Pipe Flow Calculator

Use the pipe flow calculator to find the velocity and discharge of water in a gravity-fed pipe flow.

Poise-Stokes Converter

Use this Poise-Stokes converter to express dynamic viscosities in terms of kinematic viscosities and vice versa.

Poiseuille's Law Calculator

Our Hagen-Poiseuille's law calculator is a simple way to calculate the flow rate, resistance, or pressure change of a fluid or gas in a pipe.

Porosity and Permeability Calculator

The porosity and permeability calculator uses Darcy's law to calculate these two material properties as fluids flow through porous substances.

Pounds per Minute Calculator

Use our pounds per minute calculator to easily calculate the mass flow rate in lb/min.

Prandtl Meyer Expansion Calculator

Our Prandtl Meyer expansion calculator lets you calculate the downstream flow properties of an expansion wave.

Prandtl Number Calculator

Determine the Prandtl number of fluid using this Prandtl number calculator.

Refrigerant Capillary Tube Calculator

Use our refrigerant capillary tube calculator to adjust your cooling device's current capillary tube system when changing tube size.

Reynolds Number Calculator

The Reynolds number calculator will help you determine the Reynolds number – an essential physical quantity in fluid mechanics.

Stokes' Law Calculator

The Stokes' law calculator will help you determine either the viscosity of a fluid or the terminal velocity of a particle in a falling ball viscometer.

Water Density Calculator

Will it float or sink? Use the water density calculator, which takes temperature, salinity, and pressure into account, to answer the question.

Water Viscosity Calculator

This water viscosity calculator will help you determine the viscosity of water at any temperature.

Wind Correction Angle Calculator

Determine the wind correction angle for your flight using Omni's wind correction angle calculator.

Wind Load Calculator

This wind load calculator will show you how much force wind exerts on your structure at a specific velocity, helping you build roofs, windows, and signs safely.

Air Density Calculator

Use the online air density calculator to find out the density of air at any given temperature and pressure.

Air Pressure at Altitude Calculator

If you ever wondered what is the atmospheric pressure high up in the mountains, our air pressure at altitude calculator is there to help you.

Density Altitude Calculator

The density altitude calculator tells you your effective altitude in terms of the International Standard Atmosphere, which is necessary for determining airplane engine performance and lift.

Dew Point Calculator

Check out the dew point calculator to calculate the highest temperature at which water vapor condenses.

Heat Index Calculator

Wondering what the weather feels like today? Check the heat index calculator for the apparent temperature.

Kinematic Viscosity of Air Calculator

Use the kinematic viscosity of air calculator to find out the viscosity of air at given pressure and temperature.

Lightning Distance Calculator

This simple lightning distance calculator can estimate how far away a storm is based on the time difference between a flash of lightning and the thunder ⚡⚡⚡

Mixing Ratio of Air Calculator

The mixing ratio of air calculator allows you to find the actual and saturation mixing ratios of air as well as associated relative humidity.

Psychrometric Calculator

Accurately determine humidity with our humidity ratio calculator and psychrometric chart. Optimize your environmental analysis. Use it now!

Relative Humidity Calculator

Use the relative humidity calculator to explore the relationship between relative humidity, air temperature, and dew point.

Temperature at Altitude Calculator

Find the temperature above Earth's surface at any altitude with our temperature at altitude calculator!

True Airspeed Calculator

Use the true airspeed calculator to calculate the true airspeed (referred to as TAS) for all aircraft.

Virtual Temperature Calculator

Use our virtual temperature calculator to find the density temperature using either known temperatures or the mixing ratio!

Wet Bulb Calculator

With humidity and temperature you can find out the value of the wet-bulb temperature, and if it's any different from the normal air temperature.

Biot Number Calculator

The Biot number calculator helps you compute the Biot number that determines how quickly heat transfers from the surface of a body to its interior.

Boltzmann Factor Calculator

The Boltzmann factor calculator computes a relative probability of two states of a system at thermal equilibrium.

Boyle's Law Calculator

Use this Boyle's law calculator to estimate a gas's pressure and volume in an isothermal process.

Calorimetry Calculator

With this calorimetry calculator, you can quickly solve constant-pressure calorimetry problems.

Carnot Efficiency Calculator

The Carnot efficiency calculator finds the efficiency of the Carnot heat engine.

Charles' Law Calculator

The Charles' law calculator finds a gas's temperature and volume in an isobaric process.

Coefficient of Performance Calculator

This coefficient of performance calculator determines the coefficient of performance of reversible and irreversible refrigerators and heat pumps.

Compressibility Factor Calculator

Use the compressibility factor calculator to chart the behavior of non-ideal gases.

Curie's Law Calculator

Check the Curie's law calculator to calculate the magnetization of paramagnetic materials, including its dependence on temperature.

Effectiveness-NTU Calculator

Use the effectiveness-NTU calculator to perform either a design calculation or a performance assessment of a heat exchanger.

Electrical Mobility Calculator

The electrical mobility calculator explores the Einstein-Smoluchowski relation connecting the random motion of electrons in a wire to their mobility in the presence of a voltage difference.

Enthalpy Calculator

The enthalpy calculator lets you find the enthalpy of any endothermic or exothermic reaction.

Evaporation Rate Calculator

Calculate how quickly a body of water will evaporate given wind speed and humidity using the evaporation rate calculator.

Gay-Lussac's Law Calculator

With Gay-Lussac's law calculator, you can quickly work out the pressure and temperature values in an isochoric process.

Heat Capacity Calculator

Determine the heat capacity of a body using Omni's heat capacity calculator.

Heat Transfer Calculator

Calculate heat transfer rates as well as rates for both conduction and convection with this easy-to-use heat transfer calculator.

Heat Transfer Coefficient Calculator

Estimate the overall heat transfer coefficient for a wall using the heat transfer coefficient calculator.

Ideal Gas Density Calculator

Use this tool to calculate the density of an ideal gas using the ideal gas law.

Ideal Gas Law Calculator

Use the ideal gas law calculator to find the pressure, volume, and temperature of a gas.

Isentropic Flow Calculator

Determine the properties of fluid flow during an isentropic process using the Isentropic flow calculator.

Joule Heating Calculator

Use our Joule heating calculator to compute the heat generated by a current-carrying cable.

Latent Heat Calculator

The latent heat calculator computes the energy released or absorbed during a phase transition like melting or vaporizing.

LMTD Calculator – Log Mean Temperature Difference

Determine the logarithmic mean temperature difference using the LMTD calculator.

Mean Free Path Calculator

The mean free path calculator lets you find the mean free path of any particle in an ideal gas.

Mixed Air Calculator

Use this mixed air calculator to determine the properties of the mixed air stream without using a psychrometric chart.

Mixed Air Temperature Calculator

The mixed air temperature calculator gives you the total temperature of two gases with different temperatures and concentrations.

Newton's Law of Cooling Calculator

This Newton's law of cooling calculator lets you find the time it takes for different objects to cool down.

Nusselt Number Calculator

The handy Nusselt number calculator shows you the relation between the length of the convection transfer region, the convection coefficient, and the thermal conductivity of the fluid.

Particles Velocity Calculator

Use the particles velocity calculator to calculate the average velocity of gas particles.

Root Mean Square Velocity Calculator

Use the root mean square velocity calculator to find the velocity of a particle in a gas based on the kinetic theory of gases.

Sensible Heat Calculator

Determine the heat required to change an object's temperature using our sensible heat calculator.

Specific Gas Constant Calculator

Determine the properties of a gas using the specific gas constant calculator.

Specific Heat Calculator

Find out how much heat is required to warm up a sample with the specific heat calculator.

Thermal Conductivity Calculator

The thermal conductivity calculator lets you calculate the thermal conductivity of any material or the heat flux through any object.

Thermal Diffusivity Calculator

Estimate the rate of transfer of heat of a material or a substance using the thermal diffusivity calculator.

Thermal Energy Calculator

With the thermal energy calculator, you can estimate the kinetic energy of molecules in an ideal gas.

Thermal Equilibrium Calculator

The thermal equilibrium calculator helps you determine the final temperature at which two objects or systems are in thermal equilibrium.

Thermal Expansion Calculator

The thermal expansion calculator finds the change in length or volume of a material subject to extreme temperatures.

Thermal Resistance Calculator

Use our thermal resistance calculator to find the thermal resistance of an object for three different shapes: a plate, hollow cylinder, and hollow sphere.

Combined Gas Law Calculator

Try this combined gas law calculator to determine the basic properties of the most common thermodynamic processes.

Van der Waals Equation Calculator

Van der Waals equation calculator finds the relation between volume, pressure, and temperature in a real gas.

Water Heating Calculator

Use the water heating calculator to determine how much time and energy you'll need to increase the temperature of the water.

Watts to Heat Calculator

Use the watts to heat calculator to know the power you need to heat a particular substance.

Bohr Model Calculator

The Bohr model calculator computes the frequency of emitted or absorbed electromagnetic waves at the transition of an electron between the orbits of an atom.

Compton Scattering Calculator

This Compton scattering calculator helps you find the wavelength extension of the photon scattered by any particle.

Compton Wavelength Calculator

Use the Compton wavelength calculator to compute the Compton wavelength, a quantum characteristic of any particle.

Curie Constant Calculator

The Curie constant calculator helps you calculate the Curie constant characterizing magnetic properties of paramagnets.

De Broglie Wavelength Calculator

De Broglie wavelength calculator finds the wavelength corresponding to a particle exhibiting wave-like behavior.

Fermi Level Calculator

Use this Fermi level calculator to estimate Fermi parameters and explore the Fermi-Dirac statistics.

Frequency of Light Calculator

Learn how to calculate the frequency of light and the regions of the electromagnetic spectrum with this handy tool!

Heisenberg's Uncertainty Principle Calculator

Learn about the Heisenberg uncertainty principle equation and the relationship between the uncertainty of position, momentum, and velocity in quantum mechanics.

Hydrogen Energy Levels Calculator

The hydrogen energy levels calculator computes the energy levels of hydrogen and hydrogen-like atoms.

Magnetic Moment Calculator

Use the magnetic moment calculator to compute the magnetic moment of an atom.

Photoelectric Effect Calculator

The photoelectric effect calculator computes the kinetic energy of electrons ejected from material by incident light.

Photon Energy Calculator

The photon energy calculator computes the energy of a single photon from its wavelength or frequency.

Rydberg Equation Calculator

You can find the line spectrum of hydrogen-like atoms with this Rydberg equation calculator.

Stefan Boltzmann Law Calculator

Stefan Boltzmann law calculator uses the temperature and emissivity of a body to find the power radiated from it.

Wien's Law Calculator

Use Wien's law calculator to find the temperature of any hot object based on its thermal emission spectrum.

Buoyancy Experiment Calculator

Use our buoyancy experiment calculator to estimate the density of dish soap (or an unknown liquid). You'll need to use salt water, a ball, a vessel, a measuring tape, and a weight.

Flat vs. Round Earth Calculator

Omni's not-flat Earth calculator helps you perform three experiments that prove the world is round.

Hair Diffraction Calculator

Measure the width of your hair using a laser and physics. This hair diffraction calculator will help you set up the experiment, understand the physics behind (hair) diffraction patterns, and, of course, calculate the width of your hair.

Immersed Weight Calculator

The immersed weight calculator helps you understand why objects float or sink in different liquids and guides you through DIY experiments to see firsthand how immersing something in various liquids affects its weight in different ways.

Projectile Motion Experiment Calculator

Blast off with this super fun projectile motion experiment calculator! Create a simple launcher and learn the basics of projectile motion.

Smartphone Projector Calculator

In this smartphone projector calculator, you will learn how to make your very own DIY smartphone projector with a shoebox and a magnifying glass. Experiment with it and learn how to find the focal length of your magnifying glass lens.

Sun Angle Calculator

Our sun angle calculator helps you estimate the Sun's position in the sky regarding its elevation and azimuth angles.

Sunrise Sunset Calculator

Estimate the sunrise and sunset times in your local timezone based on your location using the sunrise sunset calculator.

Toilet Paper Race Calculator - Mass Moment of Inertia

The cylinder mass moment of inertia calculator is a tool that can help you find out which cylinder/cylindrical shell/ cylindrical tube will run faster in an eventually do it yourself race experiment.

Blast Radius Calculator

Use our blast radius calculator to estimate non-fragment flying distance outside which no less than one fragment is expected to fly.

Exoplanet Travel Planner Calculator

The exoplanet travel planner will help you plan your next trip to a foreign planet including food, water, expected exploration time...

Inverse Square Law Calculator

The inverse square law calculator will shed light on the propagation of radiating quantities and their peculiar relationship with distance.

Quantum Number Calculator

The quantum number calculator allows you to list all possible values of quantum numbers for a given electron shell.

Reaction Time Calculator

How fast are you? The reaction time calculator teaches you a way to measure your reflexes — with physics!

Surface Tension Calculator

Determine surface tension for liquids using the surface tension calculator.

Warp Speed Calculator

Use the warp speed calculator to find a Star Trek ship's superluminal velocity, distance, and time travel based on its warp factor.

100 Amp Wire Size Calculator

The 100-ampere wire size calculator will assist you in choosing the proper wire size for your next equipment installation.

12 Volt Wire Size Calculator

The 12 volt wire size calculator will assist you in choosing the proper wire size for your next house installation or battery appliance.

220 Volt Wire Size Calculator

The 220 volt wire size calculator will assist you in choosing the proper wire size for your next house installation.

24V Wire Size Calculator

Use our 24V wire size calculator to know the area, diameter, or AWG of your 24V wire.

3-Phase Motor Amperage Calculator

Use this 3-phase motor amperage calculator to quickly estimate how much amperage your 3-phase motor draws, given its needed voltage, power rating, power factor, and efficiency.

Acceleration due to Gravity Calculator

Use the acceleration due to gravity calculator to determine the value of g at Earth and other planets.

Acceleration using force and mass calculator

Through the acceleration using force and mass calculator, you can find the acceleration of an object when the force and mass values are known.

Amp to Wire Size Calculator

The Amp to wire size calculator will help you choose the proper wire size for your next equipment installation.

Angle of Incidence Calculator

Calculate angles with ease using our angle of incidence calculator. Perfect for Snell's law and refraction calculations. Try it now!

Angle of Refraction Calculator

Our angle of refraction calculator can help you find the bending path of a wave from Snell's law.

Buoyant Force Calculator

Use this tool to calculate the buoyant force of any object submerged or floating in any fluid.

Cube Density Calculator

The cube density calculator uses cube weight and one measurement to calculate the density for you.

Daylight Calculator

Learn how to calculate the daylight hours of (almost) any place on Earth with Omni Calculator!

DC Wire Size Calculator

Use our DC Wire Size Calculator to know the wire size needed for your DC electric application.

Density Mass Volume Calculator

The density mass volume calculator lets you enter any two of these object properties and calculates the missing value.

Density of a Cylinder Calculator

Use this density of a cylinder calculator to determine the density of any cylindrical mass.

Density To Mass Calculator

This density to mass calculator uses the density and volume of an object to calculate its mass.

Density to Weight Calculator

The density to weight calculator goes from the density of a substance to its weight, given you know its volume.

Energy to Wavelength Calculator

Have the energy of a wave or photon, and want to find its wavelength? Look no further than the energy to wavelength calculator!

Free Fall Distance Calculator

With the free fall distance calculator, you can find the distance of a falling object using time or velocity.

Free Fall Height Calculator

Our free fall height calculator can help you calculate the height an item travels through during a free fall.

Free Fall Time Calculator

With the free fall time calculator you can find the time it will take an object to travel through certain space or reach certain velocity without air resistance.

Free Fall Velocity Calculator

With the free fall velocity calculator, you can find the velocity of a falling object at any distance or time.

Frequency To Wavelength Calculator

Find out how frequency and wavelength are connected to each other with our frequency to wavelength calculator.

Friction Coefficient Calculator

Find the friction coefficient for known normal force and friction using the friction coefficient calculator.

Friction Force Calculator

Determine the friction force by the coefficient of friction using the friction force calculator.

Gas Density Calculator

This gas density calculator helps you find the type of gas based on the mass and volume entered.

Gear Ratio RPM Calculator

Use our gear ratio RPM calculator to find the speed of your gears in rotations per minute.

Gear Ratio Speed Calculator

The gear ratio speed calculator will determine the speed ratio of your two-gear system, while explaining the concepts of gear ratios along the way.

Grams to cc Converter

This grams to cc converter helps you quickly calculate the volume out of mass and density.

Ideal Gas Pressure Calculator

Calculate pressure using the ideal gas law with our easy-to-use ideal gas pressure calculator. Accurate results in real time! Try it now.

Ideal Gas Temperature Calculator

The ideal gas temperature calculator finds the temperature of an ideal gas given its pressure and volume.

Ideal Gas Volume Calculator

Given the amount and temperature of a gas, this ideal gas volume calculator calculates its volume.

kVA to Amperage Calculator

Use this kVA to amperage calculator to find how strong an electric current is at a given apparent power in kVA, whether from a single-phase or 3-phase load distribution.

LC Filter Calculator

Use our LC filter calculator to determine the cutoff frequency for a low-pass or high-pass LC filter circuit.

Mass to Density Calculator

The mass to density calculator will help you calculate the density of an object from its weight if you know its volume.

Ohm's Law Current Calculator

The Ohm's law current calculator finds the current through an electric system according to the Ohm's law formula.

Ohm's Law Power Calculator

Understand Ohm's law formula and learn how to calculate power with Ohm's Law using our accurate calculator. Get results instantly!

Ohm's Law Resistance Calculator

This Ohm's law resistance calculator finds the resistance according to the Ohm's law formula.

Pendulum Frequency Calculator

Get into the swing of harmonic motions with the pendulum frequency calculator!

Pendulum Period Calculator

How long is that tick....tock? Learn how to calculate the period of a pendulum with Omnni!

RC Filter Calculator

Use our RC filter calculator to determine the cutoff frequency for a low-pass or high-pass RC filter circuit.

Root Mean Square Speed Calculator for Ideal Gas

Calculate the root mean square speed of an ideal gas.

Sphere Density Calculator

The sphere density calculator needs either radius or volume and mass of a sphere to calculate the density for you. It can also do the maths all the way around.

Sunrise Calculator

P-raise the sun: with our sunrise calculator, you will learn how to find the time of sunrise — to the minute!

Sunset Calculator

Using our sunset calculator, you will never miss the best moment of the day ever again.

Volume to Density Calculator

The volume to density calculator allows you to convert the volume of a substance to its density if you know its weight (or mass).

Wattage to Amperage Calculator

The wattage to amperage calculator helps you calculate the voltage or current from power for both DC and AC circuits.

Wavelength to Energy Calculator

Use the wavelength to energy calculator to determine the energy of a photon given its wavelength.

Wavelength to Frequency Calculator

Our wavelength to frequency calculator is here to help you estimate frequency given the wavelength and vice versa.

Wavenumber Calculator

Use the wavenumber calculator to determine the wavenumber from the wavelength or frequency and velocity of a wave.