Megaohm (MΩ)
One million ohms. Used for insulation resistance.
What is a megaohm?
- Symbol
- MΩ
- Quantity
- Electric Resistance
- Unit system
- SI
- Definition
- One million ohms. Used for insulation resistance.
- Exact
- Yes, the value is exact by definition
- Source
- SI Brochure, 9th edition (BIPM, 2019)
Common applications
Used for insulation resistance testing, multimeter input resistance and high-value resistors.
Megaohm in other electric resistance units
Megaohm quick reference
| Megaohm | Kiloohm | Ohm | Microohm |
|---|---|---|---|
| 1 MΩ | = 1000 kΩ | = 1000000 Ω | = 1000000000000 µΩ |
| 10 MΩ | = 10000 kΩ | = 10000000 Ω | = 10000000000000 µΩ |
| 100 MΩ | = 100000 kΩ | = 100000000 Ω | = 100000000000000 µΩ |
| 1000 MΩ | = 1000000 kΩ | = 1000000000 Ω | = 1e+15 µΩ |
Where the megaohm fits
The next smaller electric resistance unit is the kiloohm (kΩ). 1 MΩ = 1000 kΩ, and 1 kΩ = 0.001 MΩ.
The next larger electric resistance unit is the gigaohm (GΩ). 1 MΩ = 0.001 GΩ, and 1 GΩ = 1000 MΩ.
Frequently asked questions
- How many kiloohms are in one megaohm?
- One megaohm = 1000 kΩ (kiloohms).
- How many ohms are in one megaohm?
- One megaohm = 1000000 Ω (ohms).
- How many microohms are in one megaohm?
- One megaohm = 1000000000000 µΩ (microohms).