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Angular (Rotational) Kinetic Energy Calculator

KE = ½Iω² — energy of a spinning rigid body.

Calculates the rotational kinetic energy of a rigid body from its moment of inertia and angular velocity, plus equivalent RPM conversion.

Daniel Oh By Daniel Oh
Published Last reviewed 1 min read

Inputs

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

KE = ½ × I × ω²; ω = 2π × n/60

In depth

Calculates the rotational kinetic energy of a rigid body from its moment of inertia and angular velocity, plus equivalent RPM conversion.