Angular velocity measures how fast something rotates. Engineers use rad/s, mechanics use RPM, and navigators use degrees per second.
Angular Velocity Units
RPM (revolutions per minute) is the most common unit for motors and engines. rad/s is the SI unit. deg/s is used in navigation and gaming.
Conversions
- 1 RPM = 2π/60 rad/s ≈ 0.1047 rad/s
- 1 RPM = 6 deg/s
- 1 rad/s = 9.549 RPM
Common Values
Car engine idle: ~800 RPM. Car engine redline: 6,000–8,000 RPM. Hard drive: 5,400 or 7,200 RPM. Earth rotation: 0.00417 deg/s (1 RPM = 0.0000167 rev/s).
Try the Angular Velocity Converter
Convert between all angular velocity units instantly.
Frequently Asked Questions
How do I convert RPM to rad/s?
Multiply RPM by 2π/60 (≈ 0.1047). For example, 3,000 RPM × 0.1047 = 314.2 rad/s.