How to convert gigabytes to megabytes
One gigabyte equals 1,000 megabytes. To convert, multiply the number of gigabytes by 1,000:
Mental-math shortcut: Multiply gigabytes by 1,000 (or by 1,024 for the binary units Windows uses).
Example
Convert 2 gigabytes to megabytes: 2 GB × 1,000 = 2,000 MB.
Gigabytes to Megabytes conversion chart
| 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 |
| 64 | 64,000 |
| 100 | 100,000 |
What is a gigabyte?
A gigabyte (GB) is 1,000 megabytes, or one billion bytes, in the decimal system that phone makers, drive makers and mobile carriers use. Windows counts a "gigabyte" as 1,024³ bytes (a gibibyte, GiB), which is why a 256 GB drive shows up as about 238 GB.
What is a megabyte?
A megabyte (MB) is 1,000,000 bytes, or 1,000 kilobytes, in the decimal system. In the binary convention used by Windows, a "megabyte" means 1,048,576 bytes (a mebibyte, MiB). A smartphone photo is typically 2–5 MB, and a minute of MP3 music is about 1 MB.
Converting the other way? Use the Megabytes to Gigabytes converter.
Frequently asked questions
How many megabytes is one gigabyte?
One gigabyte is 1,000 megabytes.
How do I convert gigabytes to megabytes?
Multiply the value in gigabytes by 1,000. For example, 2 GB × 1,000 = 2,000 MB.
What is 1 GB in megabytes?
1 GB is 1,000 megabytes.
How do I convert megabytes to gigabytes?
Multiply megabytes by 0.001 (or divide by 1,000). You can also use our Megabytes to Gigabytes converter.
Conversions use the internationally agreed definitions of each unit (for example, 1 inch = 2.54 cm exactly) and are rounded for display. Volume converters use US customary units unless stated otherwise.
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