Kinetic Energy
Work out linear or rotational kinetic energy values. Free online calculator with formulas and step-by-step solutions.
Key formula
KE = (1/2)mv^2
About this tool
Kinetic energy measures the energy of motion, and it grows quickly as speed increases. This page keeps KE = ½mv² visible so users can solve for energy, mass, or speed without losing the unit checks that usually cost marks.
How to use this calculator
- Choose the variable you want to solve for and confirm which values are already known.
- Enter inputs in consistent units before calculating so the formula is applied correctly.
- Check whether the result is physically reasonable by comparing it with the size of the inputs.
- Use the step-by-step breakdown to see how the equation was rearranged and evaluated.