Kinetic Energy Calculator
Calculate the kinetic energy of a moving object from its mass and speed. The result updates as you type, with the working underneath so you can check it.
Your details
Result
Kinetic energy
875 J
- In kilojoules
- 0.875
- In kilocalories
- 0.20913
Good to know: KE = ½mv²
Please note: For study and planning. Check calculations independently before using results with chemicals, electricity, pressure or machinery, and follow safety data sheets, manufacturer instructions and local regulations.
About this tool
Formula
KE = ½mv²
Questions people ask
Why does speed matter more than mass?
Kinetic energy grows with the square of speed. Doubling speed quadruples the energy, while doubling mass only doubles it.
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How we calculate this
We use the standard published formula or definition for this calculation, and we show the working so you can check it.
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