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

Construction converters

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

Construction materials calculators

• Gravel driveway
• Gravel
• Sand
• Brick
• Concrete - column
• Concrete - slab
• Concrete driveway cost
• Concrete - tube
• Drywall
• Flooring
• Mulch
• Paver Sand
• Plywood
• Rebar calculator
• Siding
• Sod
• Soil
• Tile
• Vinyl siding

Other calculators

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

• Length converter
• Weight converter
• Temperature conversion
• Volume conversion
• Angle conversion
• Acreage
• Area conversion
• Binary
• Byte conversion
• CGS system of units converter
• Cat age
• Density conversion
• Dog age
• Energy conversion
• Force converter
• Knots to mph
• 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
• Scale conversion
• Speed conversion
• Time zones converter
• Unix time converter

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

Everyday savings calculators

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

Transportation calculators

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

Time and productivity calculators

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

Clothing calculators

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

Other calculators

• Lighting
• Sex frequency calculator

Business planning calculators

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

Investment calculators

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

Sales calculators

• Margin with discount
• Markup and margin (2 sets)
• Markdown
• Double discount
• Ending inventory
• Check digit
• Commission
• Discount
• Margin
• Margin and sales tax
• Margin and VAT
• Markup
• Percent off
• Sales
• Triple discount

Tax and salary calculators

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

Real estate calculators

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

Personal finance calculators

• Savings
• Credit card payoff
• Cell phone plan
• Sabbatical
• Retirement
• Budget
• Car depreciation
• Dream come true
• Early retirement
• Lease
• Lease mileage
• Personal loan
• Salary inflation

Debt management calculators

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

Microeconomics calculators

• Cross price elasticity
• Optimal price
• Price elasticity of demand

Macroeconomics calculators

• GDP
• GDP deflator
• GDP growth rate
• Inflation
• Real interest rate

Other calculators

• Scrap gold
• Price / quantity

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

Cardiology calculators

• QTc
• MAP (mean arterial pressure)
• ECG heart rate
• Cardiac output
• Stroke volume
• ECG boxes to seconds

Electrolytes & fluids calculators

• Creatinine Clearance
• GFR (glomerular filtration rate)
• Corrected calcium
• FENa
• Sodium correction
• Anion gap
• Arterial blood pH
• Corrected Magnesium
• Drip rate
• Free water deficit
• 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
• hCG levels
• Progesterone to estradiol ratio
• Testosterone to estrogen ratio

Hematology calculators

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

Pediatric calculators

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

Pulmonary calculators

• Lung Cancer Risk
• Pack Year
• Smoking Recovery
• Lung capacity
• CURB-65
• Endotracheal tube size
• Vital capacity

General health calculators

• Dosage
• Glasgow coma scale
• Opioid conversion
• Centor score
• Addiction
• Alvarado score
• BAC
• BSA
• Caffeine
• Free & Bioavailable Testosterone Calculator
• Medical Radiation
• Noise Exposure Time
• Revised trauma score
• Sleep
• Steroid conversion
• Water Intake

Body measurements calculators

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

Metabolic disorders calculators

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

Other calculators

• Football Calorie (2018 WC Edition)
• Pokémon Go Weight Loss

Percentages calculators

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

Algebra calculators

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

Arithmetic calculators

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

Coordinate geometry calculators

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

Trigonometry calculators

• Law of cosines
• Law of sines
• Cosine
• Sine
• Tangent
• Trigonometric functions

2D geometry calculators

• Circumference
• Pythagorean theorem
• Triangle Area
• Right triangle
• Ellipse
• Arc length
• 30 60 90 triangle
• 45 45 90 triangle
• Area of polygon
• Area of a rectangle
• Area of a right triangle
• Area of a square
• Area of a trapezoid
• Circle calc: find c, d, a, r
• Diagonal of a rectangle
• Diagonal of a square
• Equilateral Triangle
• Golden rectangle
• Heron's formula
• Hexagon
• Hypotenuse
• Isosceles Triangle
• Kite Area
• 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
• Quadrilateral Area
• Reference angle
• Rhombus Area
• Right triangle side and angle
• Special right triangles
• Square calc: find A, P, d
• Triangle angle
• Triangle height

3D geometry calculators

• Volume
• Surface area
• Cylinder Volume
• Cone Volume
• Sphere
• Area of a sphere
• Cube
• Height of a cylinder
• Pyramid Volume
• Radius of a cylinder
• Radius of a sphere
• Rectangular Prism
• Right cylinder
• Sphere Volume
• Surface area of a cylinder
• Area of a hemisphere
• Triangular Prism
• Volume of a hemisphere

Sequences calculators

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

Other calculators

• Significant figures
• Modulo
• Scientific notation
• Golden ratio

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
• Inclined plane
• Kinetic energy
• Mechanical advantage
• Newton's second law
• 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
• Malus law

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
• Newton's law of cooling
• Thermal conductivity
• Thermal energy
• Thermal expansion
• Thermodynamic processes
• 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
• Resistor color code
• 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 scattering
• Compton wavelength
• Curie constant
• Fermi level
• Magnetic moment
• Photon Energy
• Rydberg equation
• Wien's law

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 calculators

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

Cycling calculators

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

Other calculators

• Winning percentage
• Walking calorie
• Calories Burned
• Hiking
• Bench press
• ERA (Earned Run Average)
• Heart rate
• Kiteboarding
• Wilks
• Max heart rate
• Target heart rate
• Tennis balls
• VO2 max

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

Photo and video calculators

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

New tech and electronics calculators

• Battery Capacity
• Drone flight time
• 3D printing cost
• Battery Life
• Drone motor

Other calculators

• White christmas
• Days until Christmas
• Sunbathing
• Beauty products
• Tip
• Day counter
• Aquarium
• Azimuth
• CBM for shipping
• Christmas tree
• College GPA
• Crickets Chirping Thermometer
• Day of the week
• Diamond Weight
• Final grade
• Freight class
• Gender Pay Gap
• High school GPA
• Christmas tree PL
• NaNoWriMo
• New Year's resolutions
• Pay Gap US
• Pokemon Go Candy
• Potting Soil
• Salt Dough
• Streaming Royalties
• Tip from net price
• Total harmonic distortion
• Leaves on tree
• Wind chill