GB to MB Converter

It depends on the standard. This tool uses the binary standard where 1 GB equals 1024 MB. Under the decimal standard, 1 GB equals 1000 MB. Operating systems like Windows report sizes in binary, so 1024 is the value you will usually see.

Multiply the gigabytes by 1024. So MB = GB times 1024. For example, 4 GB becomes 4 times 1024, which is 4096 MB.

Hard drive and data plan marketing often uses the decimal standard, where 1 GB equals 1000 MB and the prefixes follow powers of 10. Memory and most operating systems use the binary standard, where 1 GB equals 1024 MB. The strict binary unit is sometimes written GiB and MiB.

For disk space, USB drives, and SD cards, manufacturers usually advertise capacity in decimal (1000 MB per GB), which is why a drive looks smaller in your operating system. For RAM, file sizes shown by Windows, and downloads, binary (1024 MB per GB) is the common choice. This tool uses binary.

Using the binary standard: 0.5 GB is 512 MB, 1 GB is 1024 MB, 2 GB is 2048 MB, 5 GB is 5120 MB, and 10 GB is 10240 MB.

No. The conversion runs entirely in your browser, so the values you enter never leave your device.