Calculators
Kinetic Energy Calculator
Solve for kinetic energy, mass, or velocity using consistent units locally in your browser.
Choose what to solve for, then enter the other two values using consistent units (for example, kilograms with metres per second for joules). Calculations run locally in your browser; your values are not uploaded or stored.
Solve motion energy without uploading your values.
Enter the mass with velocity, energy with velocity, or energy with mass using consistent units, such as kilograms with metres per second for joules. The calculator applies kinetic energy = 1/2 × mass × velocity squared and shows the matching result locally without being uploaded or stored.
Frequently Asked Questions
Everything you need to know about this tool, how it works, and privacy.
Which formulas does the kinetic energy calculator use?
It uses kinetic energy = 1/2 x mass x velocity squared, mass = 2 x energy / velocity squared, and velocity = square root of (2 x energy / mass). For example, 10 mass units at 2 velocity units gives a kinetic energy of 20 energy units.
Which units should I use?
Use the same mass and velocity units on both inputs, such as kilograms with metres per second for joules. The answer is reported in the matching combined energy, mass, or velocity unit.
Which inputs are accepted?
Enter values of zero or greater up to 1,000,000,000,000. Velocity must be greater than zero when solving for mass, and mass must be greater than zero when solving for velocity. Missing or non-numeric entries show a clear error instead of a result.
Do my values stay private?
Yes. The calculation and copy action run locally in your browser. CodeASystem does not upload or store the values you enter.