Megabytes to Gigabytes (MB to GB) Converter
1 megabyte equals 0.001 gigabytes — multiply the number of megabytes by 0.001 (or divide by 1000) to convert MB to GB. So 500 MB is 0.5 GB, and 2000 MB is 2 GB. This uses the decimal (SI) definition of the gigabyte, where 1 GB = 1000 MB.
The formula
To convert megabytes to gigabytes, multiply by the exact factor 0.001:
GB = MB × 0.001
For example, 750 MB × 0.001 = 0.75 GB. To go the other way, multiply gigabytes by 1000.
Conversion table
| Megabytes (MB) | Gigabytes (GB) |
|---|---|
| 1 | 0.001 |
| 2 | 0.002 |
| 5 | 0.005 |
| 10 | 0.01 |
| 25 | 0.025 |
| 50 | 0.05 |
| 100 | 0.1 |
| 250 | 0.25 |
| 500 | 0.5 |
| 1000 | 1 |
| 2000 | 2 |
| 5000 | 5 |
How to convert online
- Type the number of megabytes into the first box.
- Read the gigabytes result instantly in the second box.
- Type a GB value instead to convert back to MB — it works both ways.
Use the Megabyte to Gigabyte Converter — free and instant in your browser.
Where this conversion is used
MB-to-GB conversions come up whenever you compare a file, download or database dump against a storage quota or data plan measured in gigabytes. Developers checking build artifacts, sysadmins sizing backups, and anyone watching a mobile data cap all translate megabytes into gigabytes to see the bigger picture at a glance.
FAQ
How many gigabytes are in a megabyte?
One megabyte equals 0.001 gigabytes. Multiply MB by 0.001, so 10 MB = 0.01 GB and 100 MB = 0.1 GB.
How do I convert gigabytes back to megabytes?
Multiply gigabytes by 1000. For example, 2 GB = 2000 MB. Our Gigabyte to Megabyte converter does this instantly.
Is 1000 MB equal to 1 GB?
Yes, under the decimal (SI) standard used here, 1000 MB = 1 GB. Some operating systems use the binary gibibyte (1 GiB = 1024 MiB), which is slightly larger.
Is the conversion exact?
Yes. The factor 0.001 is exact for the decimal definition, and the tool applies it automatically so you never round by hand.
Related converters
- Gigabyte to Megabyte Converter
- Megabyte to Kilobyte Converter
- Megabyte to Terabyte Converter
- Megabyte to Byte Converter
Built by ByteVancer
ByteTools is a free product of ByteVancer, a software and web development studio. If your team needs custom web apps, tools or automation, ByteVancer can help — explore our services and get in touch.
Recommended reading
Terabyte to Petabyte Converter (TB to PB)
1 terabyte equals 0.001 petabytes. See the TB to PB formula, a table of common values, and convert instantly in your browser.
Terabyte to Megabyte Converter (TB to MB)
1 terabyte equals 1,000,000 megabytes. See the TB to MB formula, a table of common values, and convert instantly in your browser.
Terabyte to Kilobyte Converter (TB to KB)
1 terabyte equals 1,000,000,000 kilobytes. See the TB to KB formula, a table of common values, and convert instantly in your browser.
Terabyte to Gigabyte Converter (TB to GB)
1 terabyte equals 1000 gigabytes. Learn the TB to GB formula, a conversion table of common values, and convert instantly in your browser.