Microhertz is 0.000001 hertz units.
Microhertz to Millihertz Converter — uHz to mHz
Convert Microhertz (uHz) to Millihertz (mHz) using the exact conversion factor (1 microhertz = 0.001 millihertz). See the formula, worked examples, and conversion table.
Microhertz to Millihertz converter
Converter
Scientific Units Converter
Convert SI derived units, scientific notation-friendly units, atomic units, and lab measurements.
Context values
Some unit families need one extra value for a physically accurate result.
Millihertz is 0.001 hertz units.
Result = input x 1e-6 / 0.001.
Frequency units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Microhertz to Millihertz
Microhertz and Millihertz are both scientific-measurement units, spanning everything from atomic and laboratory scales to astronomical distances — the kind of conversion that comes up constantly in physics, chemistry, and astronomy when a result needs to move between conventions used in different subfields. Specifically: Microhertz is 0.000001 hertz units, and millihertz is 0.001 hertz units.
Formula
millihertz = microhertz × 0.001
This factor comes from each unit's defined relationship to the category's base unit: 1 microhertz equals 0.000001 base units, and 1 millihertz equals 0.001 base units, so dividing one by the other gives the direct microhertz-to-millihertz factor of 0.001.
Simple example
1 uHz × 0.001 = 0.001 mHz
1 microhertz = 0.001 millihertz.
Real-world example
10 uHz × 0.001 = 0.01 mHz
10 microhertz = 0.01 millihertz.
Conversion table
| Microhertz (uHz) | Millihertz (mHz) |
|---|---|
| 0.001 uHz | 0.000001 mHz |
| 0.01 uHz | 0.00001 mHz |
| 1 uHz | 0.001 mHz |
| 10 uHz | 0.01 mHz |
| 100 uHz | 0.1 mHz |
| 1,000 uHz | 1 mHz |
Reverse conversion: Millihertz to Microhertz
0.001 mHz × 1000 = 1 uHz
0.001 millihertz = 1 microhertz.
microhertz = millihertz × 1000
For a page dedicated to this direction, see Millihertz to Microhertz.
Understanding the Microhertz (uHz)
Microhertz is 0.000001 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 microhertz?
1 microhertz equals 0.001 millihertz, using the exact defined conversion factor rather than an estimate.
How do I convert microhertz to millihertz?
Multiply the microhertz value by 0.001. The converter above does this instantly to whatever precision you set.
How do I convert millihertz back to microhertz?
Use the reverse factor: 1 millihertz equals 1,000 microhertz. You can also use the swap control in the converter above to flip the direction instantly.
What is a microhertz?
Microhertz (uHz) is a unit of scientific units.
What is a millihertz?
Millihertz (mHz) is a unit of scientific units.
Is the microhertz to millihertz conversion exact?
Yes. Both microhertz and millihertz are defined by fixed standards rather than physical artifacts, so the factor of 0.001 used above is exact to as many digits as you choose to display.
Why does this category span everything from atomic to astronomical scales?
Scientific work spans an enormous range of physical scales, from atomic distances (measured in angstroms or atomic mass units) to interstellar distances (measured in astronomical units or parsecs), so this category groups SI-derived and scale-specific units that researchers commonly need to convert between within their field.