mb to gb converter

How to convert megabytes to gigabytes

In this converter a megabyte is 1,000,000 bytes and a gigabyte is 1,000,000,000 bytes, the SI decimal prefixes. Divide megabytes by 1000 to get gigabytes. One thousand MB is 1 GB. A mebibyte is 1024² bytes and a gibibyte is 1024³ bytes, and those live in the same factor table under MiB and GiB. 1024 MB is 1.024 GB, not 1 GiB. Operating systems that label gibibytes as 'GB' are why a 256 GB drive does not show 256 of the units this page calls GB.

Storage marketing, file sizes from a tool that means decimal SI, and plan limits written as MB that you want in GB. 1536 MB is 1.536 GB. If the source said MiB, convert MiB to GiB by dividing by 1024 instead, or pick MiB and GiB in the unit converter. This page will not silently switch to binary.

Exact formula

FormulaGB = MB ÷ 1000

GB = MB ÷ 1000 One MB is 0.001 GB. Ten MB is 0.01 GB. The worked example below uses that same conversion.

Conversion table

The megabytes column runs from 1 MB (0.001 GB) through 10000 MB (10 GB).

Worked example: Megabytes to Gigabytes

One thousand decimal megabytes is 1 GB. This page divides by 1000 because MB is 10^6 bytes and GB is 10^9 bytes. 1024 MB is 1.024 GB, not 1 GiB. A gibibyte is 1024 mebibytes, and operating systems that label that unit 'GB' are why a drive looks smaller than the box. 1536 MB is 1.536 GB. Network megabits are a factor of eight away from these megabytes. If the source said MiB, dividing by 1000 understates the decimal size.

Pitfalls for megabytes to gigabytes

• MB and MiB are different. 1 MiB = 1.048576 MB. Dividing MiB by 1000 understates the decimal size.
• Some programs say MB and mean 1024². The label does not tell you. Check the vendor's glossary.
• Network speeds in Mb/s are megabits, not megabytes. A byte is 8 bits. See the bytes page.
• 1024 MB is 1.024 GB on this page. It is 1 GiB only in the binary pair.