Millihertz to hertz
Type a value in millihertz to see it in hertz straight away, or type in the second box to convert back.
Loading the tool…
Processing and privacy: The result is calculated inside your browser and your data is not sent to any server.
How to use it
- Type the value in the millihertz box.
- Read the result in hertz as you type, and pick the precision you need.
- Swap the direction to convert back, or copy the result.
How it is calculated
Hz = mHz × 0.001
Multiply the value in millihertz by 0.001 to get hertz.
Example
To convert 25 mHz to hertz: 25 × 0.001 = 0.025 Hz.
Conversion table
| Millihertz (mHz) | Hertz (Hz) |
|---|---|
| 1 | 0.001 |
| 2 | 0.002 |
| 3 | 0.003 |
| 5 | 0.005 |
| 10 | 0.01 |
| 20 | 0.02 |
| 25 | 0.025 |
| 50 | 0.05 |
| 100 | 0.1 |
| 250 | 0.25 |
| 500 | 0.5 |
| 1,000 | 1 |
About the units
- Millihertz
- A millihertz is one thousandth of a hertz, one cycle every 1000 seconds, used for slow phenomena such as seismic oscillations.
- Hertz
- The hertz is the SI unit of frequency, one cycle per second, equal to the reciprocal second (s⁻¹).
Limits and caveats
- Results are rounded for display and computed with the browser's floating point precision (about 15 significant digits).
- Both unit factors are exact by their official definitions.
Questions about this tool
How many hertz are in one millihertz?
1 mHz = 0.001 Hz exactly.
How do I convert millihertz to hertz?
Use Hz = mHz × 0.001. For example, 25 mHz = 0.025 Hz.
How many millihertz are in one hertz?
1 Hz = 1,000 mHz.
How many hertz is a 3.5 GHz processor?
3.5 GHz is 3500 MHz or 3.5 billion hertz, so the processor clock ticks 3.5 billion times per second. Clock speed alone does not decide performance; core count and design matter too.
How do I convert BPM to hertz?
Divide beats per minute by 60, so a tempo of 120 BPM is 2 Hz, two beats per second. The same works for heart rate: 72 beats per minute is 1.2 Hz.