About this calculator
Enter a value and choose the units.
How to use it
- Enter the value.
- Choose the unit it is in and the unit you want.
- Read the result, or see every unit in the table.
The formula
Result = value × (Hz in the “from” unit) ÷ (Hz in the “to” unit)
- 1 rpm
- 1/60 Hz
- 1 rad/s
- 1/(2π) Hz
Worked example
A motor at 3,000 rpm
- 3,000 rpm ÷ 60 = 50 Hz.
- = 314.2 rad/s.
What the result means
The factors are exact international definitions, so results are as accurate as the digits shown.
Assumptions
- Steady rotation or oscillation.
Limitations
- None beyond rounding.
Frequently asked questions
What frequency is mains power in India?
50 Hz.
How do I convert rpm to Hz?
Divide by 60.
What is 1 GHz?
One billion cycles per second.
Last reviewed on 3 October 2026. Found a mistake? Tell us.