Gigaohm to Megaohm (GΩ to MΩ)
Convert GΩ to MΩ — Electric Resistance converter
Also written as Gohm to Mohm.
One gigaohm equals 1000 MΩ, so to convert gigaohms to megaohms you multiply the value by 1000. A gigaohm is larger than a megaohm — going the other way, 1 MΩ = 0.001 GΩ. For example, 10 GΩ = 10000 MΩ and 50 GΩ = 50000 MΩ.
1 GΩ = 1000 MΩ
Gigaohm to Megaohm formula
1 Gigaohm = 1000 MΩ
Worked examples
- 25 GΩ = 25000 MΩ
- 100 GΩ = 100000 MΩ
Gigaohm to Megaohm conversion table
| Gigaohm (GΩ) | Megaohm (MΩ) |
|---|---|
| 1 | 1000 |
| 2 | 2000 |
| 3 | 3000 |
| 5 | 5000 |
| 8 | 8000 |
| 10 | 10000 |
| 12 | 12000 |
| 15 | 15000 |
| 20 | 20000 |
| 25 | 25000 |
| 50 | 50000 |
| 100 | 100000 |
| 250 | 250000 |
| 500 | 500000 |
| 1000 | 1000000 |
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 GΩ = 1000 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 gigaohm?
One gigaohm equals 1000 megaohms (MΩ).
How many gigaohms are in one megaohm?
One megaohm equals 0.001 gigaohms (GΩ).
How do you convert gigaohms to megaohms?
1 Gigaohm = 1000 MΩ. Use the calculator above for any value.
What is 5 GΩ in MΩ?
5 GΩ = 5000 MΩ.
What is 100 GΩ in MΩ?
100 GΩ = 100000 MΩ.
What is 10 GΩ in MΩ?
10 GΩ = 10000 MΩ.
What is 1000 GΩ in MΩ?
1000 GΩ = 1000000 MΩ.
Is a gigaohm bigger than a megaohm?
Yes. A gigaohm is larger — one gigaohm equals 1000 megaohms (MΩ).