Ohm to Milliohm (Ω to mΩ)
Convert Ω to mΩ — Electric Resistance converter
Also written as ohm to mohm.
One ohm equals 1000 mΩ, so to convert ohms to milliohms you multiply the value by 1000. A ohm is larger than a milliohm — going the other way, 1 mΩ = 0.001 Ω. For example, 10 Ω = 10000 mΩ and 50 Ω = 50000 mΩ.
1 Ω = 1000 mΩ
Ohm to Milliohm formula
1 Ohm = 1000 mΩ
Worked examples
- 25 Ω = 25000 mΩ
- 100 Ω = 100000 mΩ
Ohm to Milliohm conversion table
| Ohm (Ω) | Milliohm (mΩ) |
|---|---|
| 1 | 1000 |
| 2 | 2000 |
| 3 | 3000 |
| 5 | 5000 |
| 8 | 8000 |
| 10 | 10000 |
| 12 | 12000 |
| 15 | 15000 |
| 20 | 20000 |
| 25 | 25000 |
| 50 | 50000 |
| 100 | 100000 |
| 250 | 250000 |
| 500 | 500000 |
| 1000 | 1000000 |
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 Ω = 1000 mΩ.
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 milliohms are in one ohm?
One ohm equals 1000 milliohms (mΩ).
How many ohms are in one milliohm?
One milliohm equals 0.001 ohms (Ω).
How do you convert ohms to milliohms?
1 Ohm = 1000 mΩ. Use the calculator above for any value.
What is 5 Ω in mΩ?
5 Ω = 5000 mΩ.
What is 100 Ω in mΩ?
100 Ω = 100000 mΩ.
What is 10 Ω in mΩ?
10 Ω = 10000 mΩ.
What is 1000 Ω in mΩ?
1000 Ω = 1000000 mΩ.
Is a ohm bigger than a milliohm?
Yes. A ohm is larger — one ohm equals 1000 milliohms (mΩ).