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Frequency

rphtorpm

Convert revolutions per hour (rph) to revolutions per minute (rpm).

Factor1 rph = 0.01666667 rpm

Converter

rph

Accepts numbers or expressions, e.g. 150 + 14.7

Result
1rpm

Rendered to 6 significant figures.

Formula

Formula
rpm = rph × 0.01666667

Multiply any value in revolutions per hour by 0.01666667 to obtain the value in revolutions per minute.

Worked example

Convert 60 rph to rpm.

  1. 01Start with 60 rph.
  2. 02Multiply by the conversion factor: 60 × 0.01666667 = 1 rpm.
Result60 rph = 1 rpm

Conversion table

rphrpm
10.016667
20.033333
50.083333
100.16667
200.33333
500.83333
1001.6667
2003.3333
5008.3333
100016.667

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from rph to rpm?
1 rph equals 0.01666667 rpm. To convert, multiply the value in revolutions per hour by 0.01666667.
How do I convert 1 rph to rpm?
1 rph = 0.0166667 rpm. For any value, multiply by 0.01666667.
How do I convert rpm back to rph?
Divide by the same factor — or equivalently, multiply by 60. So 1 rpm = 60 rph.
When would I need to convert revolution per hour to revolution per minute?
Frequency conversions between rph and rpm 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).

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