How many hertz are in one RPM?
One RPM equals 0.0166666667 Hz.
Convert Revolutions per minute (rpm) to Hertz (Hz) instantly.
Formula
value × 0.0166666666667
| Sample | Converted |
|---|---|
| 1 rpm | 0.016667 Hz |
| 5 rpm | 0.083333 Hz |
| 10 rpm | 0.166667 Hz |
| 100 rpm | 1.666667 Hz |
| 1,000 rpm | 16.666667 Hz |
Convert revolutions per minute to hertz when a rotating speed needs to be expressed as cycles per second for measurement, analysis, or control calculations.
RPM counts revolutions per minute, while hertz counts cycles per second.
Dividing by 60 converts the time base from minutes to seconds.
A value of 1800 RPM equals 30 Hz.
Use Hz when the rotational speed needs to be used in formulas, vibration analysis, control systems, or frequency-domain work.
Use RPM when communicating equipment speed to operators, mechanics, or machinery documentation.
If the RPM value comes through gearing or an encoder, confirm that it represents actual shaft revolutions.
A rotating shaft completes cycles just like any other periodic motion.
RPM counts those cycles by the minute.
Hertz counts those cycles by the second, so the conversion is RPM divided by 60.
Hertz is useful in vibration analysis, controls, sensors, and signal processing.
It aligns rotational motion with other frequency-domain measurements.
That makes RPM-to-Hz conversion common in diagnostics and engineering analysis.
A tachometer reading in RPM usually converts directly.
An encoder or sensor signal may need pulses-per-revolution correction.
Use the actual mechanical revolution rate before converting to hertz.
Definition: Revolutions per minute measures how many full rotations occur in one minute.
History/Origin: RPM became common because rotating machinery speed is easier to read in turns per minute than in cycles per second.
Current use: RPM is used for motors, engines, fans, spindles, wheels, pumps, turbines, drills, and rotating equipment specifications.
Definition: A hertz is the SI unit of frequency equal to one cycle per second.
History/Origin: The hertz is named after Heinrich Hertz and became the standard SI unit for frequency.
Current use: Hz is used for vibration, signals, rotation-related measurements, electronics, audio, sampling, timing, and periodic motion.
| Revolutions per minute [rpm] | Hertz [Hz] |
|---|---|
| 0.01 rpm | 0.000167 Hz |
| 0.1 rpm | 0.001667 Hz |
| 1 rpm | 0.016667 Hz |
| 2 rpm | 0.033333 Hz |
| 5 rpm | 0.083333 Hz |
| 10 rpm | 0.166667 Hz |
| 20 rpm | 0.333333 Hz |
| 50 rpm | 0.833333 Hz |
| 100 rpm | 1.666667 Hz |
1 rpm = 0.016667 Hz
1 Hz = 60 rpm
Formula: value × 0.0166666666667
Example: 15 rpm = 0.25 Hz
Precision note: Use 60 RPM = 1 Hz for rotational cycles. Adjust first if the source is pulses, electrical cycles, or geared motion rather than direct shaft revolutions.
One RPM equals 0.0166666667 Hz.
3600 RPM equals 60 Hz.
Yes for full revolutions per minute. If a sensor reports pulses rather than revolutions, account for pulses per revolution first.