RPM expresses how many full rotations a motor or rotating part completes per minute.
It became the practical standard for expressing rotational speed with the development of internal combustion and electric motors.
Measurement system: Non-SI, practical engineering unit. SI equivalent: 1 rpm = 2π/60 rad/s ≈ 0.10472 rad/s.
Revolutions per Minute (RPM) facts
- Unit name
- Revolutions per Minute (RPM)
- Symbol
- rpm
- Category
- Angular Velocity
- Measurement system
- Non-SI, practical engineering unit
- SI equivalent
- 1 rpm = 2π/60 rad/s ≈ 0.10472 rad/s
- Common uses
- Engine speed, hard drive and fan speeds, centrifuge equipment
Definition of the revolutions per minute (rpm)
RPM expresses how many full rotations a motor or rotating part completes per minute.
Measurement system and SI relationship
Non-SI, practical engineering unit
SI equivalent: 1 rpm = 2π/60 rad/s ≈ 0.10472 rad/s
History of the revolutions per minute (rpm)
It became the practical standard for expressing rotational speed with the development of internal combustion and electric motors.
Where is the revolutions per minute (rpm) used?
Engine speed, hard drive and fan speeds, centrifuge equipment