GB to MB Converter
Handy for comparing data allowances, upload limits and storage sizes. This page uses decimal units (1 GB = 1,000 MB).
1 GB = 1,000 MB
megabytes
1 GB = 1,000 MB
How to convert gigabytes to megabytes
Multiply the number of gigabytes by 1,000.
Formula
MB = GB × 1,000
Examples
- 0.5 GB × 1,000 = 500 MB
- 4 GB × 1,000 = 4,000 MB
- 64 GB × 1,000 = 64,000 MB
Gigabytes to megabytes conversion table
| Gigabytes (GB) | Megabytes (MB) |
|---|---|
| 0.1 | 100 |
| 0.25 | 250 |
| 0.5 | 500 |
| 1 | 1,000 |
| 1.5 | 1,500 |
| 2 | 2,000 |
| 3 | 3,000 |
| 4 | 4,000 |
| 5 | 5,000 |
| 8 | 8,000 |
| 10 | 10,000 |
| 16 | 16,000 |
| 32 | 32,000 |
| 50 | 50,000 |
| 64 | 64,000 |
| 128 | 128,000 |
Values rounded to 4 decimal places or 4 significant digits.
About gigabytes
A gigabyte (GB) is 1,000,000,000 bytes. Drive and phone manufacturers use this decimal gigabyte, while Windows reports sizes in binary units but labels them "GB". That is why a 1 TB drive shows up as about 931 GB.
About megabytes
A megabyte (MB) is 1,000,000 bytes, or 1,000 kilobytes, under the decimal convention.
Frequently asked questions
How many megabytes are in one gigabyte?
One gigabyte equals 1,000 megabytes.
How do I convert gigabytes to megabytes?
Multiply the number of gigabytes by 1,000. For example: 4 GB × 1,000 = 4,000 MB.
How many gigabytes are in one megabyte?
One megabyte equals 0.001 gigabytes.
Is the GB to MB conversion exact?
Yes. The factor follows directly from the official definitions of both units, so the only rounding is in how many decimals are displayed.