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Frequency

rphtoHz

Convert revolutions per hour (rph) to hertz (Hz).

Factor1 rph = 0.0002777778 Hz

Converter

rph

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

Result
1Hz

Rendered to 6 significant figures.

Formula

Formula
Hz = rph × 0.0002777778

Multiply any value in revolutions per hour by 0.0002777778 to obtain the value in hertz.

Worked example

Convert 3600 rph to Hz.

  1. 01Start with 3600 rph.
  2. 02Multiply by the conversion factor: 3600 × 0.0002777778 = 1 Hz.
Result3600 rph = 1 Hz

Conversion table

rphHz
10.00027778
20.00055556
50.0013889
100.0027778
200.0055556
500.013889
1000.027778
2000.055556
5000.13889
10000.27778

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from rph to Hz?
1 rph equals 0.0002777778 Hz. To convert, multiply the value in revolutions per hour by 0.0002777778.
How do I convert 1 rph to Hz?
1 rph = 0.000277778 Hz. For any value, multiply by 0.0002777778.
How do I convert Hz back to rph?
Divide by the same factor — or equivalently, multiply by 3600. So 1 Hz = 3600 rph.
When would I need to convert revolution per hour to hertz?
Frequency conversions between rph and Hz 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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