How many RPM are in one hertz?
One hertz equals 60 RPM when each cycle represents one full revolution.
Convert Hertz (Hz) to Revolutions per minute (rpm) instantly.
Formula
value × 60
| Sample | Converted |
|---|---|
| 1 Hz | 60 rpm |
| 5 Hz | 300 rpm |
| 10 Hz | 600 rpm |
| 100 Hz | 6,000 rpm |
| 1,000 Hz | 60,000 rpm |
Convert hertz to revolutions per minute when a frequency in cycles per second needs to be expressed as rotational speed for motors, shafts, fans, or machinery.
Hertz measures cycles per second, while RPM measures revolutions per minute.
For rotating equipment, one cycle can correspond to one revolution, making the conversion a direct multiplication by 60.
A value of 25 Hz equals 1500 RPM when the rotation is one revolution per cycle.
Use RPM for motors, fans, spindles, wheels, pulleys, and rotating machinery.
Use Hz when the source is a signal, vibration frequency, or control-system measurement that needs cycles per second.
If a system has poles, gear ratios, or slip, convert the measured rotational frequency rather than assuming electrical frequency equals shaft RPM.
Hertz counts cycles each second.
RPM counts revolutions each minute.
When the cycle is a full rotation, multiplying by 60 converts the same motion into revolutions per minute.
RPM is the familiar unit for motors, fans, lathes, spindles, and rotating shafts.
A hertz value may come from a sensor, controller, encoder, or vibration measurement.
Converting to RPM makes the number easier to compare with equipment ratings.
Electrical frequency is not always the same as shaft rotation.
Induction motors, gearboxes, belt drives, and multi-pole machines can change the relationship.
Use the actual rotational frequency when the goal is mechanical RPM.
Definition: A hertz is the SI unit of frequency equal to one cycle per second.
History/Origin: Hertz became the standard frequency unit for waves, signals, timing, and periodic motion.
Current use: Hz is used for signals, audio, vibration, electronics, sampling, timing, and rotational frequency measurements.
Definition: Revolutions per minute measures how many full turns occur in one minute.
History/Origin: RPM became common in machinery because rotating equipment is easier to describe by turns per minute than by cycles per second.
Current use: RPM is used for motors, engines, fans, spindles, wheels, pumps, turbines, drills, and rotating machinery specifications.
| Hertz [Hz] | Revolutions per minute [rpm] |
|---|---|
| 0.01 Hz | 0.6 rpm |
| 0.1 Hz | 6 rpm |
| 1 Hz | 60 rpm |
| 2 Hz | 120 rpm |
| 5 Hz | 300 rpm |
| 10 Hz | 600 rpm |
| 20 Hz | 1,200 rpm |
| 50 Hz | 3,000 rpm |
| 100 Hz | 6,000 rpm |
1 Hz = 60 rpm
1 rpm = 0.016667 Hz
Formula: value × 60
Example: 15 Hz = 900 rpm
Precision note: Use 1 Hz = 60 RPM only when each hertz cycle represents one full revolution. Motor slip, gearing, and pole count can change practical shaft speed.
One hertz equals 60 RPM when each cycle represents one full revolution.
50 Hz equals 3000 RPM if the frequency represents one revolution per cycle.
Only when the frequency describes rotational cycles. For waves or signals, RPM may not be a meaningful target unit.