hertz
Hzfrequency · International · Modern
SI derived unit of frequency; 1 Hz = 1 s⁻¹.
Converter
frequency · International · Modern
revolution per minute (rpm)
r/minexact
- Record
- M442
- Definition quality
- Standardized
- Conversion mode
- multiplicative
- Calculator
- Fully calculable
Definition
1 rpm = 2π/60 rad/s.
Reference value
2π/60
History & use
Common machinery rotational speed.
Modern use
Still in current use in International. Beyond that, modern use is context-dependent and varies by region and measurement system.
Did you know?
NIST gives about 0.1047198 rad/s per rpm.