How to convert gigabytes to megabytes
One gigabyte equals 1,000 megabytes, so multiply the value in gigabytes by 1000: MB = GB × 1000.
Example: 500 GB = 500 × 1000 = 500,000 MB.
Gigabytes to megabytes table
| Gigabytes (GB) | Megabytes (MB) |
|---|---|
| 0.1 | 100 |
| 0.5 | 500 |
| 1 | 1,000 |
| 2 | 2,000 |
| 3 | 3,000 |
| 4 | 4,000 |
| 5 | 5,000 |
| 6 | 6,000 |
| 7 | 7,000 |
| 8 | 8,000 |
| 9 | 9,000 |
| 10 | 10,000 |
| 15 | 15,000 |
| 20 | 20,000 |
| 25 | 25,000 |
| 30 | 30,000 |
| 40 | 40,000 |
| 50 | 50,000 |
| 75 | 75,000 |
| 100 | 100,000 |
| 250 | 250,000 |
| 500 | 500,000 |
| 1,000 | 1,000,000 |
About the units
- Gigabyte (GB): Decimal gigabyte: 1,000,000,000 bytes, the unit on drive labels and data plans.
- Megabyte (MB): Decimal megabyte: 1,000,000 bytes, as used by storage makers, macOS and network speeds.
Need the other direction? Convert megabytes to gigabytes — 1 megabyte = 0.001 gigabytes.
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Open the unit converter Frequently asked questions
How many megabytes are in a gigabyte?
1 gigabyte = 1,000 megabytes.
What is the formula for gigabytes to megabytes?
MB = GB × 1000.
How much is 500 GB in MB?
500 GB = 500,000 MB.