Megaohm to Ohm (MΩ to Ω)
Convert MΩ to Ω — Electric Resistance converter
Also written as Mohm to ohm.
One megaohm equals 1000000 Ω, so to convert megaohms to ohms you multiply the value by 1000000. A megaohm is larger than a ohm — going the other way, 1 Ω = 0.000001 MΩ. For example, 10 MΩ = 10000000 Ω and 50 MΩ = 50000000 Ω.
1 MΩ = 1000000 Ω
Megaohm to Ohm formula
1 Megaohm = 1000000 Ω
Worked examples
- 25 MΩ = 25000000 Ω
- 100 MΩ = 100000000 Ω
Megaohm to Ohm conversion table
| Megaohm (MΩ) | Ohm (Ω) |
|---|---|
| 1 | 1000000 |
| 2 | 2000000 |
| 3 | 3000000 |
| 5 | 5000000 |
| 8 | 8000000 |
| 10 | 10000000 |
| 12 | 12000000 |
| 15 | 15000000 |
| 20 | 20000000 |
| 25 | 25000000 |
| 50 | 50000000 |
| 100 | 100000000 |
| 250 | 250000000 |
| 500 | 500000000 |
| 1000 | 1000000000 |
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 = 1000000 Ω.
Megaohms and gigaohms show up in insulation testing and high-impedance input specifications. Readings at this scale are sensitive to humidity and to surface contamination on the board, so they are quoted with test voltage and conditions attached.
Frequently asked questions
How many ohms are in one megaohm?
One megaohm equals 1000000 ohms (Ω).
How many megaohms are in one ohm?
One ohm equals 0.000001 megaohms (MΩ).
How do you convert megaohms to ohms?
1 Megaohm = 1000000 Ω. Use the calculator above for any value.
What is 5 MΩ in Ω?
5 MΩ = 5000000 Ω.
What is 100 MΩ in Ω?
100 MΩ = 100000000 Ω.
What is 10 MΩ in Ω?
10 MΩ = 10000000 Ω.
What is 1000 MΩ in Ω?
1000 MΩ = 1000000000 Ω.
Is a megaohm bigger than a ohm?
Yes. A megaohm is larger — one megaohm equals 1000000 ohms (Ω).