UsefulTab

GB to MB Converter

Convert gigabytes to megabytes instantly, using binary (1024-based) units.

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Enter a data size to convert it

Enter a size and pick its unit. Every other unit is calculated live using binary (1024-based) sizing — right here in your browser, with nothing sent to a server.

Runs entirely in your browser

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How to convert GB to MB

Multiply gigabytes by 1024 to get megabytes in binary units. For example, 4 GB × 1024 = 4096 MB. Phone data plans and drive packaging often use decimal units instead, where 1 GB = 1000 MB, so a 4 GB plan may mean 4000 MB. The converter above also shows kilobytes, bytes and terabytes.

Gigabytes to megabytes table

Gigabytes (GB)Megabytes (MB)
0.5 GB512 MB
1 GB1024 MB
2 GB2048 MB
4 GB4096 MB
8 GB8192 MB
16 GB16384 MB

Common questions

How many MB is 2 GB?

2 GB is 2048 MB in binary units, or 2000 MB in decimal units.

How many MB is 0.5 GB?

Half a gigabyte is 512 MB in binary units.

Is this tool binary or decimal?

Binary (1024-based): 1 KB = 1024 bytes, 1 MB = 1024 KB, 1 GB = 1024 MB, 1 TB = 1024 GB.