Kinetic energy calculator: Eₖ = ½mv²
Calculate kinetic energy, mass or speed from any two known values using Eₖ = ½mv².
Enter exactly two values among kinetic energy, mass and speed. Leave the quantity you want to calculate empty.
The calculator uses the classical formula for translational kinetic energy. It is appropriate at speeds much lower than the speed of light and does not include rotational kinetic energy.