Data

Gigabytes to megabytes

1 gigabyte = 1,024 megabytes.

1 gigabyte = 1,024 megabytes. Multiply by 1,024. Binary units, matching the Units Converter app: 1 GB = 1,024 MB.

1,024 megabytes

Common amounts

GBMB
1 GB1,024 MB
2 GB2,048 MB
5 GB5,120 MB
10 GB10,240 MB
100 GB102,400 MB

How it works

How to convert gigabytes to megabytes

MB = GB × 1,024.

Worked examples: 5 gigabytes = 5,120 megabytes; 12 gigabytes = 12,288 megabytes.

About gigabytes and megabytes

This page uses binary units like the app: 1 GB = 1,024 MB. Drive makers use decimal units (1 GB = 1,000 MB), which is why a new drive looks smaller in your computer. A megabyte here is 1,024 kilobytes; strictly, binary units are written MiB and GiB.

When you'd convert gigabytes to megabytes

Useful when an app store, upload limit or data plan lists sizes in different units.

Common mistake: mixing binary and decimal units. The gap is 2.4% per kilobyte, 4.9% per megabyte and 7.4% per gigabyte.

To go the other way, use the megabytes to gigabytes converter.

The converter on this page works out the answer in your browser as you type, and shows the factor so you can check it by hand.

Questions

How do I convert gigabytes to megabytes?

1 gigabyte = 1,024 megabytes. Multiply by 1,024. Binary units, matching the Units Converter app: 1 GB = 1,024 MB.

What does the Converter : Units app add?

The same conversion, plus history, a constants library, and the rest of the unit categories on the phone.