Angular Momentum
For rotation about a fixed principal axis, angular momentum is inertia times angular velocity.
Angular Momentum
Rotation · 2 inputs
How to use this calculator
- Enter moment of inertia in kg·m².
- Enter angular speed in rad/s.
- Select Calculate and keep the output unit with the answer.
Before you use the answer
Choose a system boundary and a positive direction before entering measured values. Introductory equations deliberately leave out some real-world effects. If the setup has changing acceleration, drag, losses or nonuniform properties, first decide whether the simplified model is a useful approximation.
General three-dimensional motion requires an inertia tensor rather than this scalar product.
Does it save my inputs?
No calculation history is stored by this website. The calculator works locally in your browser. See the privacy policy for hosting and contact details.
Why might a result be approximate?
Measurement uncertainty, ideal-model assumptions and floating-point rounding can all matter. Displaying more digits does not improve the original measurement.
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