Bytes to Gigabytes
Convert bytes to gigabytes instantly — one byte is 1e-09 gigabytes.
| Bytes | Gigabytes |
|---|---|
| 1 B | 1e-09 GB |
| 2 B | 2e-09 GB |
| 3 B | 3e-09 GB |
| 5 B | 5e-09 GB |
| 10 B | 1e-08 GB |
| 25 B | 2.5e-08 GB |
| 50 B | 5e-08 GB |
| 100 B | 1e-07 GB |
How to use
- Enter a value in the Bytes field.
- The Gigabytes figure appears immediately — no button to press.
- Typing in the Gigabytes field converts back to Bytes the same way.
- Use the reference table for the values that come up most often.
Bytes to Gigabytes formula
The factor from bytes to gigabytes is 1e-09.
GB = B × 1e-09
Why this factor: the byte and the gigabyte are both defined against the byte, so dividing one definition by the other gives 1e-09 directly. Both definitions are set out in full below.
To go the other way, divide by 1e-09 — or use the Gigabytes to Bytes converter, which is the same calculation reversed.
Worked example
Start with 4 B. Multiply by 1e-09 to get 4e-09 GB.
4 B × 1e-09 = 4e-09 GB
The converter above does this for any value you type, in either direction.
What is a byte?
A byte is eight bits — historically the space for one text character, and the standard unit of file size.
Definition: Exactly 8 bits.
Where it is used: File and storage sizes, memory capacity, and data quotas.
What is a gigabyte?
A gigabyte is one billion bytes — the everyday unit of storage and memory capacity.
Definition: Exactly 1,000,000,000 bytes under SI prefixes. The binary gibibyte (GiB) is 1,073,741,824 bytes.
Where it is used: Phone and laptop storage, RAM capacity, video file sizes, and cloud storage plans.
Bytes vs Gigabytes
The byte and the gigabyte belong to the same family of units, so converting between them is usually a matter of shifting a decimal point or applying a small whole-number factor.
Frequently asked questions
How many gigabytes are in a byte?
One byte equals 1e-09 gigabytes.
What is the formula to convert bytes to gigabytes?
Multiply the number of bytes by 1e-09. To reverse it, divide by 1e-09 instead.
How do I convert gigabytes back to bytes?
Divide by 1e-09, which is the same as multiplying by 1e+09.
How many gigabytes are in 10 bytes?
10 B works out to 1e-08 GB.
How is the byte defined?
Exactly 8 bits.