Science & Engineering
Physics, electricity, chemistry, weather, and engineering formulas.
Acceleration Calculator
Calculate acceleration from change in velocity over time.
Density Calculator
Calculate density in kilograms per cubic meter and grams per cubic centimeter.
Dew Point Calculator
Calculate the dew point temperature from current air temperature and relative humidity.
Displacement as a Function of Average Velocity and Time Calculator
Solve displacement, average velocity, or time from s = v̄t.
Displacement as a Function of Velocity and Time Calculator
Calculate displacement from initial velocity, final velocity, and elapsed time.
Displacement as a Function of Velocity, Acceleration and Time Calculator
Calculate displacement from initial velocity, constant acceleration, and time.
E = mc² Calculator
Convert mass to rest energy with Einstein’s mass-energy equivalence.
Elastic Potential Energy Calculator
Calculate energy stored in a stretched or compressed ideal spring.
Electricity Cost
Estimate the electricity cost of running appliances based on their wattage and usage time.
Electricity Cost Calculator
Estimate energy use and electricity cost for one or more devices.
Engine Horsepower
Estimate peak engine horsepower based on displacement, RPM, and volumetric efficiency.
Force Calculator
Calculate net force, mass, or acceleration from Newton’s second law.
Friction Calculator
Calculate friction force from a coefficient of friction and normal force or mass.
Gravitational Potential Energy Calculator
Calculate gravitational potential energy near a planet’s surface.
Heat Index
Calculate the 'feels like' temperature by combining air temperature and relative humidity.
Hooke's Law Calculator
Solve spring force, spring constant, or displacement using Hooke’s law.
Horsepower Calculator
Determine an engine's mechanical horsepower by providing its torque output and rotational speed (RPM).
Ideal Gas Law Calculator
Solve pressure, volume, amount, or absolute temperature for an ideal gas in SI units.
Impulse Calculator
Calculate impulse, average force, or contact time from J = FΔt.
Impulse-Momentum Calculator
Calculate impulse and momentum change from mass and initial/final velocity.
Kinetic Energy Calculator
Calculate translational kinetic energy, mass, or speed.
Mass Calculator
Calculate the total mass of an object based on its density and volume.
Molarity Calculator
Calculate the molar concentration of a solute in a solution by mass, volume, and molar mass.
Molecular Weight
Calculate molar mass from a neutral molecular formula, including nested groups and hydrate notation.
Momentum Calculator p = mv
Calculate linear momentum, mass, or velocity.
Ohm's Law Calculator
Calculate voltage, current, resistance, and power from a selected known pair.
Pressure Calculator
Calculate pressure, force, or area using P = F/A.
Resistor Color Code
Decode the resistance value and tolerance of axial resistors using the standard electronic color code system.
Speed Calculator
Calculate average speed and pace from distance and elapsed time.
Uniformly Accelerated Motion Calculator
Solve one constant-acceleration motion variable from standard one-dimensional kinematic equations.
Velocity as a Function of Acceleration and Time Calculator
Calculate final velocity from initial velocity, acceleration, and elapsed time.
Velocity Calculator
Calculate average velocity based on displacement and time.
Voltage Drop Calculator
Calculate voltage drop in a wire run (Single Phase).
Wavelength Calculator
Calculate wavelength, wave speed, or frequency.
Weight Calculator (Physics)
Calculate weight force, mass, or gravitational acceleration.
Weight on Planets
Calculate your weight on different celestial bodies in our solar system.
Wind Chill Calculator
Calculate the perceived temperature due to wind cooling effect.
Work Calculator (Physics)
Calculate mechanical work from force, displacement, and the angle between them.