Physics calculator
Kinetic Energy Calculator
Calculate kinetic energy from an object's mass and velocity.
Kinetic energy
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What is kinetic energy?
Kinetic energy is the energy an object has because of its motion. An object with more mass or a higher velocity has more kinetic energy.
Kinetic energy formula
KE is kinetic energy in joules, m is mass in kilograms, and v is velocity in meters per second.
Example
Suppose an object has a mass of 10 kilograms and is moving at 5 meters per second.
The object has 125 joules of kinetic energy.
Why does velocity matter so much?
Velocity is squared in the kinetic energy formula. That means doubling velocity does not merely double kinetic energy — it increases kinetic energy by a factor of four.
Frequently asked questions
What unit is kinetic energy measured in?
The SI unit of kinetic energy is the joule, abbreviated J.
Does Calquo convert pounds to kilograms?
Yes. If you enter mass in pounds, Calquo converts the value to kilograms before calculating kinetic energy.
Does Calquo convert mph to m/s?
Yes. Miles per hour and kilometers per hour are converted to meters per second automatically.
What happens to kinetic energy if velocity doubles?
Kinetic energy becomes four times greater because velocity is squared in the formula.
What happens to kinetic energy if mass doubles?
Kinetic energy doubles because mass appears to the first power in the equation.