Picohertz is 1e-12 hertz units.
Picohertz to Millihertz Converter — pHz to mHz
Convert Picohertz (pHz) to Millihertz (mHz) using the exact conversion factor (1 picohertz = 1e-9 millihertz). See the formula, worked examples, and conversion table.
Picohertz to Millihertz converter
Converter
Frequency Converter
Convert hertz, SI frequency prefixes, RPM, beats per minute, and angular frequency.
Context values
Some unit families need one extra value for a physically accurate result.
Millihertz is 0.001 hertz units.
Result = input x 1e-12 / 0.001.
Frequency uses hertz as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Picohertz to Millihertz
Picohertz and Millihertz both describe how fast something cycles or rotates, and the conversion is a routine part of reading a car tachometer or motor spec sheet against a scientific frequency figure. Specifically: Picohertz is 1e-12 hertz units, and millihertz is 0.001 hertz units.
Formula
millihertz = picohertz × 1e-9
This factor comes from each unit's defined relationship to the category's base unit: 1 picohertz equals 1e-12 base units, and 1 millihertz equals 0.001 base units, so dividing one by the other gives the direct picohertz-to-millihertz factor of 1e-9.
Simple example
1 pHz × 1e-9 = 1e-9 mHz
1 picohertz = 1e-9 millihertz.
Real-world example
1,000 pHz × 1e-9 = 0.000001 mHz
1,000 picohertz = 0.000001 millihertz.
Conversion table
| Picohertz (pHz) | Millihertz (mHz) |
|---|---|
| 60 pHz | 6e-8 mHz |
| 600 pHz | 6e-7 mHz |
| 1,000 pHz | 0.000001 mHz |
| 3,000 pHz | 0.000003 mHz |
| 6,000 pHz | 0.000006 mHz |
| 10,000 pHz | 0.00001 mHz |
Reverse conversion: Millihertz to Picohertz
1e-9 mHz × 1000000000 = 1 pHz
1e-9 millihertz = 1 picohertz.
picohertz = millihertz × 1000000000
For a page dedicated to this direction, see Millihertz to Picohertz.
Understanding the Picohertz (pHz)
Picohertz is 1e-12 hertz units.
Understanding the Millihertz (mHz)
Millihertz is 0.001 hertz units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many millihertz are in 1 picohertz?
1 picohertz equals 1e-9 millihertz, using the exact defined conversion factor rather than an estimate.
How do I convert picohertz to millihertz?
Multiply the picohertz value by 1e-9. The converter above does this instantly to whatever precision you set.
How do I convert millihertz back to picohertz?
Use the reverse factor: 1 millihertz equals 1,000,000,000 picohertz. You can also use the swap control in the converter above to flip the direction instantly.
What is a picohertz?
Picohertz (pHz) is a unit of frequency.
What is a millihertz?
Millihertz (mHz) is a unit of frequency.
Is the picohertz to millihertz conversion exact?
Yes. Both picohertz and millihertz are defined by fixed standards rather than physical artifacts, so the factor of 1e-9 used above is exact to as many digits as you choose to display.