1 gigabyte (GB) = 1,000,000,000 bytes (B). To convert, multiply by 1,000,000,000: B = GB × 1,000,000,000. For example, 5 GB = 5,000,000,000 B.
B = GB × 1,000,000,000
Gigabytes to bytes table
| Gigabytes (GB) | Bytes (B) |
|---|---|
| 1 | 1,000,000,000 |
| 2 | 2,000,000,000 |
| 3 | 3,000,000,000 |
| 4 | 4,000,000,000 |
| 5 | 5,000,000,000 |
| 10 | 10,000,000,000 |
| 20 | 20,000,000,000 |
| 25 | 25,000,000,000 |
| 50 | 50,000,000,000 |
| 100 | 100,000,000,000 |
| 250 | 250,000,000,000 |
| 500 | 500,000,000,000 |
| 1,000 | 1,000,000,000,000 |
The two units
Gigabyte (GB). One billion bytes, the unit drive makers use on the box.
Byte (B). Eight bits. File sizes and memory are counted in bytes.
Because both units are defined in terms of the same base unit, the factor 1,000,000,000 is exact, not a rounded measurement.
Convert gigabytes to other units
- Gigabytes to bits — 1 GB = 8,000,000,000 bit
- Gigabytes to kilobytes — 1 GB = 1,000,000 kB
- Gigabytes to megabytes — 1 GB = 1,000 MB
- Gigabytes to terabytes — 1 GB = 0.001 TB
- Gigabytes to petabytes — 1 GB = 0.000001 PB
- Gigabytes to kibibytes — 1 GB = 976,562.5 KiB
- Gigabytes to mebibytes — 1 GB = 953.6743164 MiB
- Gigabytes to gibibytes — 1 GB = 0.9313225746 GiB
- Gigabytes to tebibytes — 1 GB = 0.0009094947 TiB
Convert other units to bytes
Questions people ask
- How many bytes are in a gigabyte?
- 1,000,000,000, exactly.
- How do you convert gigabytes to bytes?
- B = GB × 1,000,000,000. It is the same as dividing by 1e-9.
- How do you convert bytes back to gigabytes?
- GB = B ÷ 1,000,000,000. See bytes to gigabytes.
Results use the legal definitions of each unit and are checked against the Pint unit library. Display rounds to 10 significant digits. All unit conversions · More tools
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