MB to GB
Unit Converters

MB to GB

Convert megabytes to gigabytes (or gigabytes to megabytes) instantly. Type a value in either field and the other updates live; use the swap button to flip the direction.

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How It Works

One gigabyte is 1024 megabytes, so to convert megabytes to gigabytes you divide the number of megabytes by 1024. To go the other way, multiply gigabytes by 1024.

Frequently Asked Questions

How many megabytes are in one gigabyte?
One gigabyte is 1024 megabytes when using binary (base-2) units, which is the standard for computer memory and file sizes. This converter uses the 1024 ratio.
Why is it 1024 and not 1000?
Computers use binary math, and 1024 is 2 to the 10th power. The prefixes kilo, mega, and giga were borrowed from the metric system, so 1 GB = 1024 MB in computing contexts.
What is the difference between a GB and a GiB?
A GiB (gibibyte) is exactly 1024 MiB. A GB (gigabyte) technically means 1000 MB in the SI standard, but in everyday computing the term GB almost always refers to the 1024-based value, which is what this converter uses.

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