Ohm to Megaohm (Ω to MΩ)
Convert Ω to MΩ — Electric Resistance converter
Also written as ohm to Mohm.
One ohm equals 0.000001 MΩ, so to convert ohms to megaohms you multiply the value by 0.000001. A ohm is smaller than a megaohm — going the other way, 1 MΩ = 1000000 Ω. For example, 10 Ω = 0.00001 MΩ and 50 Ω = 0.00005 MΩ.
1 Ω = 0.000001 MΩ
Ohm to Megaohm formula
1 Ohm = 0.000001 MΩ
Worked examples
- 25 Ω = 0.000025 MΩ
- 100 Ω = 0.0001 MΩ
Ohm to Megaohm conversion table
| Ohm (Ω) | Megaohm (MΩ) |
|---|---|
| 1 | 0.000001 |
| 2 | 0.000002 |
| 3 | 0.000003 |
| 5 | 0.000005 |
| 8 | 0.000008 |
| 10 | 0.00001 |
| 12 | 0.000012 |
| 15 | 0.000015 |
| 20 | 0.00002 |
| 25 | 0.000025 |
| 50 | 0.00005 |
| 100 | 0.0001 |
| 250 | 0.00025 |
| 500 | 0.0005 |
| 1000 | 0.001 |
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 = 0.000001 MΩ.
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 megaohms are in one ohm?
One ohm equals 0.000001 megaohms (MΩ).
How many ohms are in one megaohm?
One megaohm equals 1000000 ohms (Ω).
How do you convert ohms to megaohms?
1 Ohm = 0.000001 MΩ. Use the calculator above for any value.
What is 5 Ω in MΩ?
5 Ω = 0.000005 MΩ.
What is 100 Ω in MΩ?
100 Ω = 0.0001 MΩ.
What is 10 Ω in MΩ?
10 Ω = 0.00001 MΩ.
What is 1000 Ω in MΩ?
1000 Ω = 0.001 MΩ.
Is a ohm bigger than a megaohm?
No. A ohm is smaller — one ohm equals 0.000001 megaohms, while one megaohm equals 1000000 ohms.