Millihenry is 0.001 henry units.
Millihenrys to Nanohenrys Converter — mH to nH
Convert Millihenry (mH) to Nanohenry (nH) using the exact conversion factor (1 millihenry = 1,000,000 nanohenry). See the formula, worked examples, and conversion table.
Millihenrys to Nanohenrys converter
Converter
Electricity Converter
Convert electrical units by family and calculate voltage, current, resistance, power, and energy with context values.
Context values
Some unit families need one extra value for a physically accurate result.
Nanohenry is 1e-9 henry units.
Result = input x 0.001 / 1e-9.
Electrical units in the same family convert directly.
Reserved above the conversion cards and below the converter.
About Converting Millihenrys to Nanohenrys
Millihenry and Nanohenry both belong to the electricity family — voltage, current, resistance, power, or energy — units that show up constantly when working across the different standards used by household wiring (120V/240V depending on region), automotive electrical systems (12V/24V), and electronics design. Specifically: Millihenry is 0.001 henry units, and nanohenry is 1e-9 henry units.
Formula
nanohenrys = millihenrys × 1000000
This factor comes from each unit's defined relationship to the category's base unit: 1 millihenry equals 0.001 base units, and 1 nanohenry equals 1e-9 base units, so dividing one by the other gives the direct millihenry-to-nanohenry factor of 1000000.
Simple example
1 mH × 1000000 = 1,000,000 nH
1 millihenry = 1,000,000 nanohenrys.
Real-world example
120 mH × 1000000 = 120,000,000 nH
120 millihenrys = 120,000,000 nanohenrys.
Conversion table
| Millihenry (mH) | Nanohenry (nH) |
|---|---|
| 1 mH | 1,000,000 nH |
| 5 mH | 5,000,000 nH |
| 12 mH | 12,000,000 nH |
| 24 mH | 24,000,000 nH |
| 120 mH | 120,000,000 nH |
| 240 mH | 240,000,000 nH |
Reverse conversion: Nanohenry to Millihenry
1 nH × 0.000001 = 0.000001 mH
1 nanohenry = 0.000001 millihenrys.
millihenrys = nanohenrys × 0.000001
For a page dedicated to this direction, see Nanohenry to Millihenry.
Understanding the Millihenry (mH)
Millihenry is 0.001 henry units.
Understanding the Nanohenry (nH)
Nanohenry is 1e-9 henry units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many nanohenrys are in 1 millihenry?
1 millihenry equals 1,000,000 nanohenrys, using the exact defined conversion factor rather than an estimate.
How do I convert millihenry to nanohenry?
Multiply the millihenry value by 1000000. The converter above does this instantly to whatever precision you set.
How do I convert nanohenry back to millihenry?
Use the reverse factor: 1 nanohenry equals 0.000001 millihenrys. You can also use the swap control in the converter above to flip the direction instantly.
What is a millihenry?
Millihenry (mH) is a unit of electricity.
What is a nanohenry?
Nanohenry (nH) is a unit of electricity.
Is the millihenry to nanohenry conversion exact?
Yes. Both millihenry and nanohenry are defined by fixed standards rather than physical artifacts, so the factor of 1000000 used above is exact to as many digits as you choose to display.
What's the difference between voltage, current, and resistance?
Voltage (volts) is the electrical potential difference driving current through a circuit. Current (amperes) is the rate of flow of electric charge. Resistance (ohms) is how much a component opposes that flow. They're related by Ohm's law (V = I × R), but they are distinct physical quantities, and this page converts between units of just one of them.