Milliohm to Ohm (mΩ to Ω)
Convert mΩ to Ω — Electric Resistance converter
Also written as mohm to ohm.
One milliohm equals 0.001 Ω, so to convert milliohms to ohms you multiply the value by 0.001. A milliohm is smaller than a ohm — going the other way, 1 Ω = 1000 mΩ. For example, 10 mΩ = 0.01 Ω and 50 mΩ = 0.05 Ω.
1 mΩ = 0.001 Ω
Milliohm to Ohm formula
1 Milliohm = 0.001 Ω
Worked examples
- 25 mΩ = 0.025 Ω
- 100 mΩ = 0.1 Ω
Milliohm to Ohm conversion table
| Milliohm (mΩ) | Ohm (Ω) |
|---|---|
| 1 | 0.001 |
| 2 | 0.002 |
| 3 | 0.003 |
| 5 | 0.005 |
| 8 | 0.008 |
| 10 | 0.01 |
| 12 | 0.012 |
| 15 | 0.015 |
| 20 | 0.02 |
| 25 | 0.025 |
| 50 | 0.05 |
| 100 | 0.1 |
| 250 | 0.25 |
| 500 | 0.5 |
| 1000 | 1 |
Resistor notation and where each scale is used
Resistor values are usually written without a decimal point, because decimal points disappear on smudged schematics and photocopies. BS 1852 notation puts the multiplier where the point would go: 4R7 is 4.7 Ω, 4K7 is 4.7 kΩ, and 4M7 is 4.7 MΩ. A value written plainly as "4.7" with no unit is ambiguous and worth checking.
The scale is decimal throughout: 1 MΩ = 1,000 kΩ = 1,000,000 Ω, and 1 Ω = 1,000 mΩ = 1,000,000 µΩ. On this page, 1 mΩ = 0.001 Ω.
Milliohms and microohms are the domain of shunts, contact resistance, busbars and battery internal resistance. At these values the resistance of your test leads is no longer negligible, which is why they are measured with a four-wire (Kelvin) connection rather than a standard multimeter.
Frequently asked questions
How many ohms are in one milliohm?
One milliohm equals 0.001 ohms (Ω).
How many milliohms are in one ohm?
One ohm equals 1000 milliohms (mΩ).
How do you convert milliohms to ohms?
1 Milliohm = 0.001 Ω. Use the calculator above for any value.
What is 5 mΩ in Ω?
5 mΩ = 0.005 Ω.
What is 100 mΩ in Ω?
100 mΩ = 0.1 Ω.
What is 10 mΩ in Ω?
10 mΩ = 0.01 Ω.
What is 1000 mΩ in Ω?
1000 mΩ = 1 Ω.
Is a milliohm bigger than a ohm?
No. A milliohm is smaller — one milliohm equals 0.001 ohms, while one ohm equals 1000 milliohms.