Kinetic Energy Calculator
Find kinetic energy from mass and velocity.
Result
Kinetic energy (J)
9.00
How it works
KE = ½ · m · v²
Kinetic energy is the energy of motion: half the mass times the velocity squared. With kg and m/s, it's in joules. Example: 2 kg at 3 m/s → 9 J.
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Frequently asked questions
What is the kinetic energy formula?
KE = ½ · m · v².
Does doubling speed double the energy?
No — energy depends on v², so doubling speed gives four times the energy.
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