Resistance Converter
Convert resistance units with the factor behind each answer.
1 MΩ = 1,000,000 Ω
Common conversions
- 1 Ω = 0.001 kΩ
- 1 kΩ = 1,000 Ω
- 1 MΩ = 1,000 kΩ
- 1 MΩ = 1,000,000 Ω
- 1 mΩ = 0.001 Ω
- 1 GΩ = 1,000 MΩ
Insulation resistance
Insulation testers read in MΩ or GΩ. Compare a reading with the limit in your specification in the same unit, and note that insulation resistance falls as temperature rises.
Ohm's law
R = V / I. A resistance converts to another unit exactly, but finding a resistance from volts and amps is a calculation. The Ohm's law calculator does that.
Unit factors
Every unit in terms of the base unit shown. To convert, multiply by the factor of the unit you have and divide by the factor of the unit you want.
| Unit | Equals | What it is |
|---|---|---|
| mΩ | 0.001 Ω | Milliohm. Cable and contact resistance. |
| Ω | 1 Ω | Ohm, the SI unit of resistance. |
| kΩ | 1,000 Ω | Kiloohm, a thousand ohms. |
| MΩ | 1,000,000 Ω | Megohm. Insulation resistance readings. |
| GΩ | 1,000,000,000 Ω | Gigaohm. High-range insulation resistance. |
Frequently asked questions
What is the formula to convert MΩ to Ω?
Ω = MΩ × 1,000,000. For example, 2.5 MΩ is 2,500,000 Ω.
How do I convert Ω back to MΩ?
MΩ = Ω × 1 × 10⁻⁶. The Swap button above reverses the direction for any pair of units.
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