Gigabytes to Megabytes
A gigabyte is 1,000 megabytes, the standard unit for phone storage, video files, and monthly data plans. A megabyte is 1,000 kilobytes, a common unit for document, photo, and small app file sizes. 1 GB equals 1,000 MB, so converting between them is a matter of multiplying by that fixed factor — type any value into the converter below and both sides update instantly as you type.
Both units belong to data, measured here against data's base unit (bit) — every other data unit on this site converts through that same reference point, which is why the table below can also be read as a quick cross-check against nearby values.
Formula
MB = GB × 1,000
GB = MB × 0.001
Worked example: 5 GB × 1,000 = 5,000 MB.
Conversion table
| Gigabyte (GB) | Megabyte (MB) |
|---|---|
| 1 GB | 1,000 MB |
| 2 GB | 2,000 MB |
| 3 GB | 3,000 MB |
| 5 GB | 5,000 MB |
| 10 GB | 10,000 MB |
| 20 GB | 20,000 MB |
| 25 GB | 25,000 MB |
| 50 GB | 50,000 MB |
| 100 GB | 100,000 MB |
| 250 GB | 250,000 MB |
| 500 GB | 500,000 MB |
| 1,000 GB | 1,000,000 MB |
Frequently asked
- How many Megabytes in a gigabyte?
- 1 GB equals 1,000 MB.
- How do I convert Gigabytes to Megabytes?
- Multiply the value in GB by 1,000 to get MB. The converter above does this instantly as you type.
- Is the conversion exact?
- Yes — Gigabyte and Megabyte are both defined by a fixed conversion factor to data's base unit (bit), so the result shown is exact to the precision displayed, not an approximation.