GB to MB Converter
Multiply gigabytes by 1,000 to get megabytes (decimal units).
Formula
1 GB = 1,000 MB
megabytes = gigabytes × 1,000
Worked example
Convert 4.7 gigabytes to megabytes
- Multiply by 1,000
- 4.7 × 1,000 = 4,700
4.7 GB = 4,700 MB
Good to know
A single-layer DVD holds 4.7 GB = 4,700 MB. Mobile data plans are usually counted in decimal units, so a 1 GB allowance is 1,000 MB — though some carriers use 1,024. Check your provider’s terms if the difference matters.
Conversion table
| Gigabytes (GB) | Megabytes (MB) |
|---|---|
| 0.5 | 500 |
| 1 | 1,000 |
| 2 | 2,000 |
| 4 | 4,000 |
| 4.7 | 4,700 |
| 8 | 8,000 |
| 16 | 16,000 |
| 32 | 32,000 |
| 64 | 64,000 |
| 128 | 128,000 |
| 256 | 256,000 |
About these units
- Gigabyte (GB)
- 1,000,000,000 bytes (10⁹).
- Megabyte (MB)
- 1,000,000 bytes (10⁶). Used by storage makers and most network speeds.