Megabytes to gigabytes
Multiply megabytes by 0.001 to get gigabytes.
1,024 MB = 1.024 GB
How to convert megabytes to gigabytes
The gigabyte is one billion bytes (10⁹ B) in the decimal convention. The megabyte is one million bytes (10⁶ B) in the decimal convention.
Worked example — 1,024 MB: 1,024 × 0.001 = 1.024 GB.
Megabytes to gigabytes table
| Megabytes | Gigabytes |
|---|---|
| 100 MB | 0.1 GB |
| 250 MB | 0.25 GB |
| 500 MB | 0.5 GB |
| 1,000 MB | 1 GB |
| 1,024 MB | 1.024 GB |
| 2,000 MB | 2 GB |
| 4,000 MB | 4 GB |
| 8,000 MB | 8 GB |
| 16,000 MB | 16 GB |
Reverse and related
About megabytes and gigabytes
Megabyte (MB)
1 MB = 0.001 GBDefinition. One million bytes (10⁶ B) in the decimal convention
History and origin
The megabyte applies the metric mega prefix for a million, and like the kilobyte was historically used for both a million and 1048576 bytes. The decimal million-byte value is now the standard for storage.
Current use
Megabytes measure photos, songs and small downloads, and mobile data is often counted in megabytes.
Source: IEC 80000-13 (quantities and units — information science); NIST on binary prefixes
Gigabyte (GB)
1 GB = 1,000 MBDefinition. One billion bytes (10⁹ B) in the decimal convention
History and origin
The gigabyte uses the metric giga prefix for a billion bytes. Drive makers label capacity in decimal gigabytes, while operating systems often report the binary gibibyte, which is why sizes seem to disagree.
Current use
Gigabytes measure phone storage, memory and mobile data plans.
Source: IEC 80000-13 (quantities and units — information science); NIST on binary prefixes
Where people use this
Megabytes: photos and songs, data caps. Gigabytes: phone storage, mobile data plans. 1000 MB is 1 GB in the decimal convention.
Every value is carried to full double precision; the display is rounded.
Both units are defined in IEC 80000-13 (quantities and units — information science); NIST on binary prefixes.
Questions people ask
How many MB in a GB?
One gigabyte is 1000 megabytes in the decimal convention that drives and data plans use. To convert MB to GB, divide by 1000.
How many GB is 500 MB?
500 MB is 0.5 GB, and 2000 MB is 2 GB.
Is 1024 MB a GB?
In binary (a gibibyte) yes, but in the decimal GB used for storage, 1000 MB is 1 GB.
How many MB is 5 GB?
5 GB is 5000 MB in the decimal convention.