Megaohm to Gigaohm (MΩ to GΩ)
Convert MΩ to GΩ — Electric Resistance converter
Also written as Mohm to Gohm.
One megaohm equals 0.001 GΩ, so to convert megaohms to gigaohms you multiply the value by 0.001. A megaohm is smaller than a gigaohm — going the other way, 1 GΩ = 1000 MΩ. For example, 10 MΩ = 0.01 GΩ and 50 MΩ = 0.05 GΩ.
1 MΩ = 0.001 GΩ
Megaohm to Gigaohm formula
1 Megaohm = 0.001 GΩ
Worked examples
- 25 MΩ = 0.025 GΩ
- 100 MΩ = 0.1 GΩ
Megaohm to Gigaohm conversion table
| Megaohm (MΩ) | Gigaohm (GΩ) |
|---|---|
| 1 | 0.001 |
| 2 | 0.002 |
| 3 | 0.003 |
| 5 | 0.005 |
| 8 | 0.008 |
| 10 | 0.01 |
| 12 | 0.012 |
| 15 | 0.015 |
| 20 | 0.02 |
| 25 | 0.025 |
| 50 | 0.05 |
| 100 | 0.1 |
| 250 | 0.25 |
| 500 | 0.5 |
| 1000 | 1 |
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 = 0.001 GΩ.
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 gigaohms are in one megaohm?
One megaohm equals 0.001 gigaohms (GΩ).
How many megaohms are in one gigaohm?
One gigaohm equals 1000 megaohms (MΩ).
How do you convert megaohms to gigaohms?
1 Megaohm = 0.001 GΩ. Use the calculator above for any value.
What is 5 MΩ in GΩ?
5 MΩ = 0.005 GΩ.
What is 100 MΩ in GΩ?
100 MΩ = 0.1 GΩ.
What is 10 MΩ in GΩ?
10 MΩ = 0.01 GΩ.
What is 1000 MΩ in GΩ?
1000 MΩ = 1 GΩ.
Is a megaohm bigger than a gigaohm?
No. A megaohm is smaller — one megaohm equals 0.001 gigaohms, while one gigaohm equals 1000 megaohms.