# Angular Velocity of an Object Calculator

getcalc.com's **Angular Acceleration (α) Calculator** is an online physics tool to calculate the rate of change in angular velocity of an object, in both US customary & metric (SI) units.

## Definition & Formula

**Angular Acceleration** is the physical quantity represents the rate of change in angular velocity of an object with respect to time. It's a vector quantity often represented by the symbol α. The unit of angular acceleration is radians/seconds^{2} (rad/s^{2}) in both SI units & US customary units.