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RPM to Hertz Converter

Convert RPM to hertz and hertz to RPM instantly. Bidirectional frequency converter with formula and common values.

RPM to Hertz: 1 RPM equals 0.016667 Hz. To convert rpm to hertz, multiply by 0.016667 (Hz = RPM ÷ 60). For example, 10 RPM = 0.166667 Hz.

3600 RPM = 60 Hz

Hz = RPM ÷ 60

How to Convert RPM to Hertz

To convert from rpm to hertz, multiply the value by 0.016667. The conversion is linear, meaning doubling the input doubles the output.

Conversion Formula

  • RPM to Hertz: Hz = RPM ÷ 60
  • Hertz to RPM: RPM = Hz × 60
RPM to Hertz conversion scale — a dual ruler showing 1 RPM equals .0167 Hz.
RPM to Hertz conversion scale (RPM to Hz).

RPM to Hertz Conversion Chart

RPM (RPM)Hertz (Hz)
0.10.001667
0.250.004167
0.50.008333
10.016667
20.033333
30.05
50.083333
100.166667
200.333333
250.416667
500.833333
1001.666667
2504.166667
100016.666667

Understanding the Units

What is a Hertz?

The hertz is the SI derived unit of frequency, equal to one cycle per second (1 Hz = 1/s).

Named after Heinrich Hertz (1857–1894), German physicist who experimentally demonstrated electromagnetic waves.

Common contexts: audio, radio, computing clock speeds.

Real-World Reference Points

Item RPM (RPM) Hertz (Hz)
US power-grid frequency360060
Concert pitch (A4)26400440

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Convert hertz to terahertz and back.

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FAQ

How do I convert RPM to hertz?

Divide the RPM value by 60. For example, 3,600 RPM = 60 Hz.

What is the relationship between RPM and Hz?

Both measure rotational frequency. RPM counts revolutions per minute, while hertz counts cycles per second. Since there are 60 seconds in a minute, Hz = RPM/60.

Why does US mains electricity run at 60 Hz?

US power generators spin at 3,600 RPM (3,600/60 = 60 Hz) or 1,800 RPM with 4-pole generators. The 60 Hz standard was established by Westinghouse in the 1890s.

What RPM is a car engine at idle?

Most passenger cars idle at 600-1,000 RPM (10-16.7 Hz). At highway speed, engines typically run at 2,000-3,000 RPM.

How many hertz are in 1 rpm?

1 RPM equals 0.016667 Hz.

How do you convert rpm to hertz?

Multiply the rpm value by 0.016667. Formula: Hz = RPM ÷ 60.

How many hertz are in 5 rpm?

5 RPM = 0.083333 Hz.

How do you convert hertz back to rpm?

Use the inverse formula: RPM = Hz × 60. For example, 1 Hz = 60 RPM.