MB to GB Converter
Convert megabytes to gigabytes and back. Type a value, pick the direction, and the result shows instantly. This is the everyday conversion for files and downloads.
Enter an amount and pick the direction.
In decimal units, 1 GB is 1000 MB. Your phone or system may count in binary, where 1 GB reads as 1024 MB and the figure looks slightly smaller.
How It Works
Enter a number, then choose whether you are converting MB to GB or GB to MB. The answer updates as you type.
In decimal terms, 1 GB is 1000 MB. So 1500 MB is 1.5 GB, and 3 GB is 3000 MB.
This is the conversion people hit most: a download listed in MB, a phone storage figure in GB, a file size that needs to match a quota.
The Formula
To go from MB to GB, divide by 1000. So 2500 MB is 2.5 GB.
To go from GB to MB, multiply by 1000. So 4 GB is 4000 MB.
Phones and downloads use these decimal figures. Your system might count in binary instead, which reads a little smaller.
Worked Example
You downloaded a 1500 MB game file and want it in GB.
Divide by 1000: 1500 MB is 1.5 GB.
If your phone shows the file as a touch smaller, that is the binary count, where 1 GB reads as 1024 MB.
Common Uses
- Turning a download size in MB into GB to check against phone storage.
- Converting an email attachment limit between MB and GB.
- Matching a game or app size to a storage quota.
- Reading a file size in the unit your device prefers.