Kinetic Energy Calculator

Calculate kinetic energy from mass and speed.

Quick answer: Kinetic Energy Calculator: Calculate kinetic energy from mass and speed. Everything runs in your browser, so nothing you enter is uploaded or stored.

How to use Kinetic Energy Calculator

  1. Enter your values in the fields.
  2. The results update instantly as you type.
  3. Note or copy the numbers you need.

Features

Formula

KE = 1/2 m v^2.

Worked example

A 1,500 kg car at 20 m/s has 300,000 J, or 300 kJ, of kinetic energy.

Frequently asked questions

What is the formula?

KE = 1/2 x mass x velocity squared.

What unit is the answer?

Joules when mass is in kg and speed in metres per second.

Is the Kinetic Energy Calculator free?

Yes. It is free, needs no signup and works on any device.

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