Electrical
ΩtoMΩ
Convert ohms (Ω) to mega-ohms (MΩ).
Factor1 Ω = 1e-6 MΩ
Converter
Ω
Accepts numbers or expressions, e.g. 150 + 14.7
Result
MΩ
Rendered to 6 significant figures.
Formula
Formula
MΩ = Ω × 1e-6
Multiply any value in ohms by 1e-6 to obtain the value in mega-ohms.
Worked example
Convert 1.00000e+6 Ω to MΩ.
- 01Start with 1.00000e+6 Ω.
- 02Multiply by the conversion factor: 1.00000e+6 × 1e-6 = 1 MΩ.
Result1.00000e+6 Ω = 1 MΩ
Conversion table
| Ω | MΩ |
|---|---|
| 1 | 1e-6 |
| 2 | 2e-6 |
| 5 | 5e-6 |
| 10 | 1e-5 |
| 20 | 2e-5 |
| 50 | 5e-5 |
| 100 | 0.0001 |
| 200 | 0.0002 |
| 500 | 0.0005 |
| 1000 | 0.001 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from Ω to MΩ?
1 Ω equals 1e-6 MΩ. To convert, multiply the value in ohms by 1e-6.
How do I convert 1 Ω to MΩ?
1 Ω = 1e-6 MΩ. For any value, multiply by 1e-6.
How do I convert MΩ back to Ω?
Divide by the same factor — or equivalently, multiply by 1000000. So 1 MΩ = 1.00000e+6 Ω.
When would I need to convert ohm to mega-ohm?
Resistance conversions between Ω and MΩ are used in electrical-network analysis, instrumentation (RTD/thermistor specification), grounding and bonding measurements, and electronics design. Ohms cover most circuit calculations; kΩ and MΩ appear in input-impedance specs, while milli-ohms cover bus-bar joints and shunt resistors.
Is the conversion exact?
Yes. Both Ω and MΩ are defined by exact SI relationships, so the displayed factor is exact (any rounding shown is only for display).