Frequency
rpmtokHz
Convert revolutions per minute (rpm) to kilohertz (kHz).
Factor1 rpm = 1.666667e-5 kHz
Converter
rpm
Accepts numbers or expressions, e.g. 150 + 14.7
Result
kHz
Rendered to 6 significant figures.
Formula
Formula
kHz = rpm × 1.666667e-5
Multiply any value in revolutions per minute by 1.666667e-5 to obtain the value in kilohertz.
Worked example
Convert 60000 rpm to kHz.
- 01Start with 60000 rpm.
- 02Multiply by the conversion factor: 60000 × 1.666667e-5 = 1 kHz.
Result60000 rpm = 1 kHz
Conversion table
| rpm | kHz |
|---|---|
| 1 | 1.6667e-5 |
| 2 | 3.3333e-5 |
| 5 | 8.3333e-5 |
| 10 | 0.00016667 |
| 20 | 0.00033333 |
| 50 | 0.00083333 |
| 100 | 0.0016667 |
| 200 | 0.0033333 |
| 500 | 0.0083333 |
| 1000 | 0.016667 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from rpm to kHz?
1 rpm equals 1.666667e-5 kHz. To convert, multiply the value in revolutions per minute by 1.666667e-5.
How do I convert 1 rpm to kHz?
1 rpm = 1.66667e-5 kHz. For any value, multiply by 1.666667e-5.
How do I convert kHz back to rpm?
Divide by the same factor — or equivalently, multiply by 60000. So 1 kHz = 60000 rpm.
When would I need to convert revolution per minute to kilohertz?
Frequency conversions between rpm and kHz 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).