Gigabytes to megabytes
Multiply gigabytes by 1,000 to get megabytes.
8 GB = 8,000 MB
How to convert gigabytes to megabytes
The megabyte is one million bytes (10⁶ B) in the decimal convention. The gigabyte is one billion bytes (10⁹ B) in the decimal convention.
Worked example — 8 GB: 8 × 1,000 = 8,000 MB.
Gigabytes to megabytes table
| Gigabytes | Megabytes |
|---|---|
| 0.5 GB | 500 MB |
| 1 GB | 1,000 MB |
| 2 GB | 2,000 MB |
| 4 GB | 4,000 MB |
| 8 GB | 8,000 MB |
| 16 GB | 16,000 MB |
| 32 GB | 32,000 MB |
| 64 GB | 64,000 MB |
| 128 GB | 128,000 MB |
Reverse and related
About gigabytes and megabytes
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
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
Where people use this
Gigabytes: phone storage, mobile data plans. Megabytes: photos and songs, data caps. 1 GB is 1000 MB (decimal).
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 is 1 GB?
One gigabyte is 1000 megabytes in the decimal convention. To convert GB to MB, multiply by 1000.
How many MB is 2 GB?
2 GB is 2000 MB, and 5 GB is 5000 MB.
How many MB is half a GB?
Half a GB is 500 MB.
How many MB is 10 GB?
10 GB is 10,000 MB in the decimal convention.