Milliohm is 0.001 ohm units.
Milliohms to Ohms Converter — mOhm to Ohm
Convert Milliohm (mOhm) to Ohm (Ohm) using the exact conversion factor (1 milliohm = 0.001 ohm). See the formula, worked examples, conversion table, history, and common uses.
Milliohms to Ohms 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.
Ohm is the SI unit of electrical resistance.
Result = input x 0.001 / 1.
Electrical units in the same family convert directly.
Reserved above the conversion cards and below the converter.
About Converting Milliohms to Ohms
Milliohm and Ohm 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: Milliohm is 0.001 ohm units, and ohm is the SI unit of electrical resistance.
Formula
ohms = milliohms × 0.001
This factor comes from each unit's defined relationship to the category's base unit: 1 milliohm equals 0.001 base units, and 1 ohm equals 1 base unit, so dividing one by the other gives the direct milliohm-to-ohm factor of 0.001.
Simple example
1 mOhm × 0.001 = 0.001 Ohm
1 milliohm = 0.001 ohms.
Real-world example
120 mOhm × 0.001 = 0.12 Ohm
120 milliohms = 0.12 ohms.
Conversion table
| Milliohm (mOhm) | Ohm (Ohm) |
|---|---|
| 1 mOhm | 0.001 Ohm |
| 5 mOhm | 0.005 Ohm |
| 12 mOhm | 0.012 Ohm |
| 24 mOhm | 0.024 Ohm |
| 120 mOhm | 0.12 Ohm |
| 240 mOhm | 0.24 Ohm |
Reverse conversion: Ohm to Milliohm
0.001 Ohm × 1000 = 1 mOhm
0.001 ohms = 1 milliohm.
milliohms = ohms × 1000
For a page dedicated to this direction, see Ohm to Milliohm.
Understanding the Milliohm (mOhm)
Milliohm is 0.001 ohm units.
Understanding the Ohm
Ohm (Ohm) measures electrical resistance. The SI derived unit of electrical resistance, equal to one volt per ampere. It is classified as a SI derived unit.
Where it's used: Universal — SI derived unit used worldwide
Uses of the Ohm today
- Resistor and circuit-component ratings
- Electrical wiring and grounding specifications
- Audio equipment impedance ratings
History of the Ohm
The ohm is named after Georg Simon Ohm (1789–1854), a German physicist who published Ohm's law in 1827, describing the relationship between voltage, current, and resistance (V = I × R) — the relationship the unit itself is defined through.
Historical origin. Ohm was not the invention of a single named person; it developed through the process described above.
Ohm — sources
- BIPM SI Brochure, 9th edition — Definition of the ohm as a coherent SI derived unit.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many ohms are in 1 milliohm?
1 milliohm equals 0.001 ohms, using the exact defined conversion factor rather than an estimate.
How do I convert milliohm to ohm?
Multiply the milliohm value by 0.001. The converter above does this instantly to whatever precision you set.
How do I convert ohm back to milliohm?
Use the reverse factor: 1 ohm equals 1,000 milliohms. You can also use the swap control in the converter above to flip the direction instantly.
What is a milliohm?
Milliohm (mOhm) is a unit of electricity.
What is a ohm?
Ohm (Ohm) measures electrical resistance. The SI derived unit of electrical resistance, equal to one volt per ampere. It is classified as a SI derived unit.
Is the milliohm to ohm conversion exact?
Yes. Both milliohm and ohm 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.
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.