Rotational speed and vibration frequency converter

rpm, Hz, CPM and rad/s.

Calculating…

How it's calculated

All units are converted through the SI base unit.

In vibration analysis, 1× running speed of a 1480 rpm motor is 24.7 Hz. CPM (cycles per minute) is numerically the same as rpm. Multiply by 2 for 2× (misalignment) and by the blade or vane count for blade-pass frequency.