Frequency
rpmtomHz
Convert revolutions per minute (rpm) to millihertz (mHz).
Factor1 rpm = 16.66667 mHz
Converter
rpm
Accepts numbers or expressions, e.g. 150 + 14.7
Result
mHz
Rendered to 6 significant figures.
Formula
Formula
mHz = rpm × 16.66667
Multiply any value in revolutions per minute by 16.66667 to obtain the value in millihertz.
Worked example
Convert 60 rpm to mHz.
- 01Start with 60 rpm.
- 02Multiply by the conversion factor: 60 × 16.66667 = 1000 mHz.
Result60 rpm = 1000 mHz
Conversion table
| rpm | mHz |
|---|---|
| 1 | 16.667 |
| 2 | 33.333 |
| 5 | 83.333 |
| 10 | 166.67 |
| 20 | 333.33 |
| 50 | 833.33 |
| 100 | 1666.7 |
| 200 | 3333.3 |
| 500 | 8333.3 |
| 1000 | 16667 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from rpm to mHz?
1 rpm equals 16.66667 mHz. To convert, multiply the value in revolutions per minute by 16.66667.
How do I convert 1 rpm to mHz?
1 rpm = 16.6667 mHz. For any value, multiply by 16.66667.
How do I convert mHz back to rpm?
Divide by the same factor — or equivalently, multiply by 0.06. So 1 mHz = 0.06 rpm.
When would I need to convert revolution per minute to millihertz?
Frequency conversions between rpm and mHz are needed in signal and RF engineering, motor and turbomachinery rotational-speed work, vibration and pulse-rate analysis, and control-loop sample-rate specification. Hz dominates electronics and instrumentation; kHz, MHz and GHz cover audio through microwave; rpm and rps dominate mechanical rotational equipment; cycles per minute, second and hour cover slow industrial cyclic processes. Angular frequency (rad/s) and time-period (Hz ↔ seconds) conversions are NOT included — they require either a 2π factor or a reciprocal relationship.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).