Gigabyte to Byte
1 GB = 1000000000 B
How to convert gigabyte to byte
Enter the value in gigabyte (GB) above and the equivalent in byte (B) updates as you type. This conversion comes up when buying storage: why a "1 TB" drive shows 931 GB in the OS.
- A Netflix movie in HD is roughly 3 GB per hour → that is 1000000000 B in byte.
Typical situations: estimating download times from connection speed; comparing phone storage tiers and cloud plans.
You can also convert in the other direction: Byte to Gigabyte
Gigabyte to Byte conversion table
| Gigabyte (GB) | Byte (B) |
|---|---|
| 1 | 1000000000 |
| 2 | 2000000000 |
| 5 | 5000000000 |
| 10 | 10000000000 |
| 25 | 25000000000 |
| 50 | 50000000000 |
| 100 | 100000000000 |
Watch out for
- GB (storage) vs Gb (transfer speed): a byte is 8 bits, so 1 Gbps line transfers at most 125 MB/s
- Decimal (1 GB = 1000 MB, as drive makers count) vs binary (1 GiB = 1024 MiB, as operating systems report)
Frequently asked questions
How many bytes is 1 gigabyte?
1 gigabyte = 1000000000 bytes.
What is the formula to convert gigabyte to bytes?
The formula is: B = GB × 1000000000.
What is 10 gigabytes in bytes?
10 gigabytes = 10000000000 bytes.