Convert gigabytes to megabytes and kilobytes for digital storage.
Convert gigabytes to megabytes using the binary standard conversion factor of 1 GB = 1024 MB.
Convert gigabytes to megabytes and kilobytes for digital storage.
Convert gigabytes to megabytes using the binary standard conversion factor of 1 GB = 1024 MB.
Binary conversion (1024) used for computing. Decimal (1000) used for marketing. This converter uses binary standard (1 GB = 1024 MB).
Common mistake: Confusing binary (1024) with decimal (1000) conversion. Hard drive manufacturers often use decimal (1 GB = 1000 MB) for marketing, while operating systems use binary (1 GB = 1024 MB). This causes the "missing space" issue.
| Item | GB | MB |
|---|---|---|
| Photo (4K) | 0.008 | 8 |
| MP3 song | 0.004 | 4 |
| HD movie | 8 | 8192 |
| Game install | 50 | 51200 |
| DVD | 4.7 | 4812.8 |
1 GB equals 1024 MB (binary) or 1000 MB (decimal).
GB is decimal (10^9 bytes), GiB is binary (2^30 bytes = 1024^3 bytes).
In computing, the binary standard defines 1 GB as exactly 1024 MB (2^30 bytes).
Manufacturers use decimal (1 GB = 1000 MB), while OS uses binary (1 GB = 1024 MB). A "1 TB" drive shows ~931 GB in Windows.
1 terabyte (TB) equals 1024 gigabytes (GB) in binary, or 1000 GB in decimal.
8 GB equals exactly 8192 MB (binary).
Last Updated: 2026 · Reviewed by the UnitFig editorial team