Spins
per
second
|
RPM
|
¼ |
15
|
½ |
30
|
1 |
60
|
2 |
120
|
5 |
300
|
10 |
600
|
25 |
1500
|
Revolutions per minute, sometimes called RPM, is a measure of angular frequency. It means the number of times something spins in one minute.
For example, if a wheel spins one time in one second, it is doing 60 RPM, because there is 60 seconds in one minute.