gb to mb converter

How to convert gigabytes to megabytes

Multiply decimal gigabytes by 1000 to get decimal megabytes. One GB is 1000 MB, one thousand million bytes, not 1024 MB. Ten GB is 10,000 MB. If you wanted the binary units, 1 GiB is 1024 MiB, and the unit converter will do that pair. Mixing them is how a '1 GB' upload limit and a '1024 MB' file argue. They are 24 MB apart before anyone talks about filesystem overhead.

A host's quota in GB against a folder size reported in MB, or a video export estimate. 1.5 GB is 1500 MB. A 4 GB file is 4000 MB in decimal and about 4096 MiB only if someone already meant gibibytes. Read the prefix before you multiply.

Exact formula

FormulaMB = GB × 1000

MB = GB × 1000 One GB is 1000 MB. Ten GB is 10000 MB. The worked example below uses that same conversion.

Conversion table

The gigabytes column runs from 0.5 GB (500 MB) through 4000 GB (4000000 MB).

Worked example: Gigabytes to Megabytes

One decimal gigabyte is 1000 MB. Multiplying by 1024 is the binary conversion, and it is the wrong operation here. A 1.5 GB video estimate is 1500 MB. A 4 GB file is 4000 MB in decimal megabytes, and it is about 4096 MiB only if someone already meant gibibytes. RAM sold as '16 GB' is often 16 × 1024^3 bytes. Filesystem block size makes a folder larger than the sum of the file bytes. This multiplication does not add that overhead.

Pitfalls for gigabytes to megabytes

• ×1024 is the binary conversion. This page multiplies by 1000.
• GB of RAM is often GiB in conversation. A '16 GB' stick is usually 16 × 1024³ bytes.
• Megabits (Mb) are not megabytes (MB). Divide by 8 after you are in bytes if you crossed that line.
• Filesystem block size makes a folder slightly larger than the sum of file bytes. The unit conversion does not add that.