Use our angular momentum calculator, a free online tool to calculate the angular momentum of a rotating object for the given inertia and velocity.

If the angular velocity of the object is ω and its moment of inertia about the given axis is I, then its angular momentum about the axis is

Angular Momentum (L) = Moment of Inertia (I) x Angular Velocity (ω)

L = Iω

Angular momentum is the quantity of rotation of a body, which is the product of its moment of inertia and its angular velocity.

The SI unit of angular momentum is kilogram meter square per second (Kg m^{2}/s). Angular momentum is a vector quantity, meaning it has a magnitude and a direction. The vector points in the same direction as the ω (that is in the direction of the thumb of your right hand points when you wrap your fingers around in the direction the object is turning).

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