• Activation energy
• Atom
• Boiling point
• Boiling point at altitude
• Cell EMF
• Concentration
• Gibbs' phase rule
• Half life
• Molality
• Molarity
• Nernst equation
• Neutralization
• Osmotic pressure
• Solution dilution
• Vapor pressure of water

Construction converters

• Board foot
• Size to weight (rectangular box)
• Square footage

Construction materials calculators

• Brick
• Concrete - column
• Concrete - slab
• Concrete - tube
• Drywall
• Gravel
• Mulch
• Paver Sand
• Sand
• Soil
• Tile

Other calculators

• Heat Loss
• Paint
• Passive house savings
• Plant spacing
• Pool volume
• Roof pitch
• Roofing
• Snow load
• Trump's Wall
• Wallpaper

• Acreage
• Angle conversion
• Area conversion
• Binary
• Byte conversion
• CGS system of units converter
• Cat age
• Density conversion
• Dog age
• Energy conversion
• Force converter
• Length converter
• Fuel economy conversion
• PPM
• ppm to mg/l converter
• Paper Quantity Converter
• Power converter
• Pressure conversion
• Px to em to pt to %
• Quantity Converter
• Radiation Converter
• Speed conversion
• Temperature conversion
• Time zones converter
• Unix time converter
• Volume Conversion
• Weight conversion

• Bag Footprint
• Books vs e-Books
• Car vs. Bike
• Flight Emissions
• Smog calculator (polish)
• Plastic Footprint
• Plug-in hybrid economy
• Smog
• Tap Water

Everyday savings calculators

• Beach Price Index
• Electricity cost
• Electricity cost - single usage
• Quit Smoking And Save
• Shower cost
• Toothpaste

Transportation calculators

• Commute
• Drive Time Calculator
• Flight Radiation
• Gas
• Helium balloons
• MPG
• Speed
• Ticket optimizer
• Traffic density

Time and productivity calculators

• Social Media Time Alternatives
• English Learning Time
• Every Second
• Reading Speed
• Reverse time
• TV alternatives
• TV series duration
• Words per minute

Clothing calculators

• Bra size
• Circle skirt
• Ring Size
• Shoe Size Conversion
• Socks Loss Index

Other calculators

Business planning calculators

• Build vs. Buy
• Business budget
• CPC and CPM
• CPM
• Online marketing conversion
• Pre and post-money valuation
• SaaS Lifetime Value
• Website ad revenue

Investment calculators

• APY
• Break even
• CAGR
• Compound interest
• Current ratio
• Depreciation
• Discounted cash flow
• EBIT
• EBITDA
• EBITDA multiple
• Earnings per share
• Enterprise value
• Future value
• Investment
• MIRR
• Market capitalization
• NPV
• Payback period
• Present value
• Price/earnings ratio
• Quick ratio
• ROI
• Return on invested capital (ROIC)
• ROA
• Return On Capital Employed
• Return on Equity (ROE)
• Rule of 72
• Stock
• WACC

Sales calculators

• Check digit
• Commission
• Cross price elasticity
• Discount
• Double discount
• Ending inventory
• Margin
• Margin with discount
• Margin and sales tax
• Margin and VAT
• Markdown
• Markup
• Markup and margin (2 sets)
• Optimal price
• Percent off
• Price elasticity of demand
• Return on sales (ROS)
• Sales
• Software contract value
• Triple discount

Tax and salary calculators

• GST
• Gross to net
• Hourly to salary
• Net to gross
• Overtime
• Salary to hourly
• Sales tax
• VAT

Real estate calculators

• Cap rate
• Commercial lease
• LTV (Loan to Value)
• Net Effective Rent
• Prorated rent
• Real estate commission
• Real estate commission w. VAT
• Rental Commission

Personal finance calculators

• Budget
• Car depreciation
• Cell phone plan
• Dream come true
• Early retirement
• Lease
• Lease mileage
• Personal loan
• Retirement
• Sabbatical
• Savings

Debt management calculators

• Credit card payoff
• Debt service coverage ratio
• Debt to asset ratio
• Debt to equity
• Debt to income ratio
• Simple interest
• Loan balance
• Mortgage
• Partially amortized loan
• RV loan

Other calculators

• Inflation
• Scrap gold
• Price / quantity

• Pancake Recipe
• ABV
• Beer pong
• Bread Spreads
• Chocolate
• Coffee kick
• Coffee to water ratio
• Do or Donut?
• Eggs
• Eggs (old)
• Grams to cups
• Pizza Comparison
• Pizza party
• Pizza Cost Comparison
• Saint Patrick's Planner
• Thanksgiving
• Thanksgiving Calories

Electrolytes & fluids calculators

• Anion gap
• Arterial blood pH
• Corrected calcium
• Corrected Magnesium
• Creatinine Clearance
• Drip rate
• FENa
• Free water deficit
• GFR (glomerular filtration rate)
• Sodium correction
• Sodium correction for hypo- and hypernatremia
• Sodium deficit
• Total body water
• Urine anion gap
• Venous blood pH

Fertility & pregnancy calculators

• Due date
• Ovulation
• Period
• Pregnancy weight gain
• Progesterone to estradiol ratio
• Testosterone to estrogen ratio
• hCG levels

Hematology calculators

• ANC
• Absolute eosinophil count
• Absolute lymphocyte count
• Absolute reticulocyte count
• Blood loss
• Blood donor
• Blood type
• Blood volume
• Corrected reticulocyte count
• Hematocrit to hemoglobin
• Plasma volume
• Serum-ascites albumin gradient (SAAG)
• Transferrin saturation

Pediatric calculators

• APGAR score
• Height
• Ibuprofen dosage
• Paracetamol dosage
• Pediatric blood transfusion
• Pediatric blood volume
• Pediatric GFR (glomerular filtration rate)

Pulmonary calculators

• Lung Cancer Risk
• Lung capacity
• Pack Year
• Smoking Recovery
• Vital capacity

General health calculators

• Addiction
• BAC
• BSA
• Caffeine
• Cardiac output
• Centor score
• Dosage
• ECG boxes to seconds
• ECG heart rate
• Free & Bioavailable Testosterone Calculator
• Glasgow coma scale
• MAP (mean arterial pressure)
• Medical Radiation
• Noise Exposure Time
• Opioid conversion
• Pokémon Go Weight Loss
• QTc
• Revised trauma score
• Sleep
• Stroke volume
• Water Intake

Body measurements calculators

• APFT
• Army body fat
• BAI
• BMI (body mass index)
• BMR - Mifflin St Jeor equation
• Body Fat
• Body shape
• BMR - Harris-Benedict equation
• Ideal weight
• BMR - Katch-McArdle equation
• Lean body mass
• Navy body fat
• Ponderal Index
• Waist to Height
• Waist-Hip Ratio

Metabolic disorders calculators

• Blood sugar converter
• Calorie
• Carbohydrates
• Cholesterol ratio
• Cholesterol units
• Fat intake
• LDL cholesterol
• MELD
• Macro
• Meal calorie
• Protein
• RMR

Other calculators

• Football Calorie (2018 WC Edition)

Percentages calculators

• Convert fraction to percentage
• Percent error
• Percentage
• Percentage change
• Percentage decrease
• Percentage difference
• Percentage increase
• Percentage of percentage

Algebra calculators

• Antilog
• Cube root
• Eigenvalue 2x2
• Exponent
• Factorial
• Hyperbolic functions
• Log
• Proportion
• Quadratic formula
• Ratio
• Remainder
• Rounding
• Square root

Arithmetic calculators

• Average
• Factor
• GCF
• GCF and LCM
• LCM
• Prime factorization
• Weighted average

Coordinate geometry calculators

• Cross product
• Cylindrical coordinates
• Distance
• Dot product
• Equation of a circle
• Linear interpolation
• Midpoint
• Parabola
• Parallel line
• Perpendicular line
• Polar coordinates
• Slope
• Slope intercept form
• Spherical coordinates
• Three-dimensional distance
• Unit vector

Geometry calculators

• 30 60 90 triangle
• 45 45 90 triangle
• Arc length
• Area of polygon
• Area of a rectangle
• Area of a right triangle
• Area of a sphere
• Area of a square
• Area of a trapezoid
• Circle calc: find c, d, a, r
• Circumference
• Cone Volume
• Cube
• Cylinder Volume
• Diagonal of a rectangle
• Diagonal of a square
• Ellipse
• Equilateral Triangle
• Golden rectangle
• Height of a cylinder
• Heron's formula
• Hexagon
• Hypotenuse
• Isosceles Triangle
• Kite Area
• Law of cosines
• Law of sines
• Moment of inertia
• Octagon
• Parallelogram Area
• Parallelogram Perimeter
• Pentagon
• Perimeter of a polygon
• Perimeter of a rectangle
• Perimeter of a square
• Perimeter of a triangle
• Regular polygon
• Pyramid Volume
• Pythagorean theorem
• Quadrilateral Area
• Radius of a cylinder
• Radius of a sphere
• Rectangular Prism
• Reference angle
• Rhombus Area
• Right cylinder
• Right triangle
• Right triangle side and angle
• Special right triangles
• Sphere
• Sphere Volume
• Square calc: find A, P, d
• Surface area
• Surface area of a cylinder
• Area of a hemisphere
• Triangle angle
• Triangle Area
• Triangle height
• Triangular Prism
• Volume
• Volume of a hemisphere

Sequences calculators

• Arithmetic sequence
• Fibonacci
• Geometric sequence
• Sum of linear number sequence

Other calculators

• Golden ratio
• Modulo
• Scientific notation
• Significant figures

Classical mechanics calculators

• Projectile motion
• Free fall
• Ideal rocket equation
• Acceleration
• Car center of mass
• Car crash force
• Conservation of momentum
• Density
• Elastic potential energy
• Free fall with air resistance
• Friction
• Gravitational force
• Hooke's law
• Impulse and momentum
• Kinetic energy
• Mechanical advantage
• Poisson's ratio
• Potential energy
• Pressure
• Pulley
• Reduced mass
• Rocket thrust
• Stress
• Velocity
• Work and power

Rotational and periodic motion calculators

• Simple pendulum
• Simple Harmonic Motion
• Angular Acceleration
• Centrifugal force
• Mass moment of inertia
• Coriolis Effect
• Physical Pendulum
• Rotational kinetic energy
• Torque

Waves calculators

• Wavelength
• dB
• Speed of Sound
• Doppler effect
• Diffraction grating
• Alfvén velocity
• Distance attenuation
• Harmonic wave equation
• Lumen to lux to candela
• Reverberation time

Optics calculators

• Snell's law
• Lensmaker's Equation
• Index of refraction
• Thin Lens Equation
• Angular Resolution
• Aperture area
• Binoculars range
• Bragg's law
• Brewster Angle

Fluid mechanics calculators

• Buoyancy
• Hydrostatic pressure
• Bernoulli equation
• Drag equation
• Stokes' law
• Hydraulic pressure
• Knudsen number
• Reynolds Number

Atmospheric thermodynamics calculators

• Air density
• Air pressure at altitude
• Heat Index
• Dew point
• Lightning distance
• Cloud base

Thermodynamics calculators

• Specific heat
• Latent Heat
• Carnot efficiency
• Ideal gas law
• Particles velocity
• Biot number
• Boltzmann factor
• Curie's Law
• Efficiency
• Electrical mobility
• Enthalpy
• Joule Heating
• Mean free path
• Thermal conductivity
• Thermal energy
• Thermal expansion
• Van der Waals equation

Electromagnetism calculators

• Coulomb's law
• Lorentz Force
• Ohm's law
• Parallel resistor
• Capacitance
• Acceleration of a particle in an electric field
• Cyclotron Frequency
• Drift Velocity
• Electric field of a point charge
• Electrical power
• Magnetic Force on Current-Carrying Wire
• Energy density of electric and magnetic fields
• Faraday's Law
• Hall coefficient
• Ideal transformer
• LED resistor
• Magnetic Field of Straight Current-Carrying Wire
• Magnetic Force Between Wires
• Magnetic Permeability
• Number density
• Power factor
• RC circuit
• Series resistor
• Shockley diode calculator
• Solenoid Inductance
• Solenoid Magnetic Field
• Spherical Capacitor
• Voltage drop
• Wire resistance

Quantum mechanics calculators

• Hydrogen-like atom
• Photoelectric Effect
• De Broglie wavelength
• Stefan Boltzmann law
• Bohr Model
• Compton wavelength
• Curie constant
• Fermi level
• Magnetic moment
• Photon Energy
• Rydberg equation

Relativity calculators

• e=mc2
• Relativistic kinetic energy
• Velocity addition
• Time dilation
• Length contraction

Astrophysics calculators

• Escape velocity
• Orbital velocity
• Luminosity
• Black hole temperature
• Redshift Calculator
• Radiation pressure
• Schwarzschild radius

Other calculators

• Weight on other planets
• Stopping distance
• Earth curvature
• Arrow speed
• Sled

Running

• Marathon pace
• Pace
• Race predictor
• Race time improvement
• Running calorie
• Training pace
• VO2 max runners

Cycling

• Bike Cadence and Speed
• Bike Gear
• Biking Life Gain
• Calories Burned Biking
• Cycling Breakaway
• Cycling Heart Rate Zone
• Cycling wattage

Other calculators

• Bench press
• Calories Burned
• ERA (Earned Run Average)
• Heart rate
• Hiking
• Kiteboarding
• Max heart rate
• Target heart rate
• Tennis balls
• Walking calorie
• Wilks
• Winning percentage

• 5★ rating average
• Binomial distribution
• Chi square
• Combination
• Confidence interval
• Exponential distribution
• Exponential growth prediction
• Geometric distribution
• Lottery
• Negative binomial distribution
• Normal distribution
• Odds
• P value
• Permutation
• Point estimate
• Poisson distribution
• Probability
• Relative risk
• Risk
• SMp(x)
• Sample size
• Z score

Photo and video calculators

• Aspect ratio
• Bandwidth
• Frames to timecode
• PPI
• Projector
• Screen Size
• TV size and distance
• Time lapse
• Timecode to frames
• Video file size (by format)
• Video frame size

Other calculators

• 3D printing cost
• Aquarium
• Azimuth
• Battery Capacity
• Battery Life
• Beauty products
• CBM for shipping
• Crickets Chirping Thermometer
• Day counter
• Diamond Weight
• Drone flight time
• Drone motor
• Final grade
• Freight class
• Gender Pay Gap
• Lighting
• NaNoWriMo
• Pokemon Go Candy
• Potting Soil
• Salt Dough
• Streaming Royalties
• Sunbathing
• Tip
• Tip from net price
• Total harmonic distortion
• Leaves on tree
• Wind chill