Gigabytes to megabytes converter
Megabytes (MB)
1 gigabyte = 1,000 megabytes
How to convert gigabytes to megabytes
MB = GB × 1000
Multiply the number of gigabytes by 1000 to get megabytes. Going the other way, divide by 1000 (or multiply by 0.001).
One gigabyte is exactly defined as 1000 megabytes (to 12 significant figures), and one megabyte is 0.001 gigabytes.
Worked examples
- Convert 5 gigabytes: 5 × 1000 = 5,000 5,000 megabytes.
- Convert 12.5 gigabytes: 12.5 × 1000 = 12,500 12,500 megabytes.
- Convert 250 gigabytes: 250 × 1000 = 250,000 250,000 megabytes.
Quick-reference table
| GB | MB |
|---|---|
| 1 | 1,000 |
| 2 | 2,000 |
| 3 | 3,000 |
| 5 | 5,000 |
| 10 | 10,000 |
| 15 | 15,000 |
| 20 | 20,000 |
| 25 | 25,000 |
| 50 | 50,000 |
| 75 | 75,000 |
| 100 | 100,000 |
| 1,000 | 1,000,000 |
| MB | GB |
|---|---|
| 1 | 0.001 |
| 2 | 0.002 |
| 3 | 0.003 |
| 5 | 0.005 |
| 10 | 0.01 |
| 15 | 0.015 |
| 20 | 0.02 |
| 25 | 0.025 |
| 50 | 0.05 |
| 75 | 0.075 |
| 100 | 0.1 |
| 1,000 | 1 |
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Frequently asked questions
How many megabytes are in 1 gigabyte?
1 gigabyte equals 1,000 megabytes.
What is the formula to convert gigabytes to megabytes?
Use MB = GB × 1000. Multiply the number of gigabytes by 1000 to get megabytes. Going the other way, divide by 1000 (or multiply by 0.001).
What is 100 gigabytes in megabytes?
100 gigabytes is 100,000 megabytes.