Frequency
rpmtorph
Convert revolutions per minute (rpm) to revolutions per hour (rph).
Factor1 rpm = 60 rph
Converter
rpm
Accepts numbers or expressions, e.g. 150 + 14.7
Result
rph
Rendered to 6 significant figures.
Formula
Formula
rph = rpm × 60
Multiply any value in revolutions per minute by 60 to obtain the value in revolutions per hour.
Worked example
Convert 1 rpm to rph.
- 01Start with 1 rpm.
- 02Multiply by the conversion factor: 1 × 60 = 60 rph.
Result1 rpm = 60 rph
Conversion table
| rpm | rph |
|---|---|
| 1 | 60 |
| 2 | 120 |
| 5 | 300 |
| 10 | 600 |
| 20 | 1200 |
| 50 | 3000 |
| 100 | 6000 |
| 200 | 12000 |
| 500 | 30000 |
| 1000 | 60000 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from rpm to rph?
1 rpm equals 60 rph. To convert, multiply the value in revolutions per minute by 60.
How do I convert 1 rpm to rph?
1 rpm = 60 rph. For any value, multiply by 60.
How do I convert rph back to rpm?
Divide by the same factor — or equivalently, multiply by 0.01666667. So 1 rph = 0.0166667 rpm.
When would I need to convert revolution per minute to revolution per hour?
Frequency conversions between rpm and rph 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).