Science & engineering
Kinetic energy calculator
Find classical kinetic energy from mass and speed.
A clear answer. Here’s how.
Classical kinetic energy = mv²/2, in joules for kg and m/s. Applies to translational motion at non-relativistic speeds. It excludes rotation, deformation and potential energy.
See a worked example
Worked example
A fixed demonstration, separate from the values you enter above.
- Mass (kg)
- 2
- Speed (m/s)
- 3
Example result
- Kinetic energy (J)
- 9