Online Tools

    Angular Momentum Calculator

    Calculate angular momentum from moment of inertia and angular velocity, point-mass motion, RPM, frequency or torque impulse.

    Angular momentum

    Angle is measured between the velocity vector and radius vector. Circular motion usually uses 90 deg.

    Angular momentum formulas

    English search intent expects angular momentum, not torque or linear momentum. This calculator covers rigid-body rotation, point-mass motion and torque impulse.

    I is moment of inertia and omega is angular velocity.

    For a point mass, alpha is the angle between radius and velocity.

    A torque impulse changes angular momentum.

    Interpretation

    Axis matters
    Angular momentum is defined about a chosen point or axis. Moment of inertia and angular velocity must refer to that same axis.

    Frequently Asked Questions

    Sources and References

    Calculations are based on the listed reference sources. Links open in a new tab.

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