Bytes to gigabytes
Type a value in bytes to see it in gigabytes straight away, or type in the second box to convert back.
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Processing and privacy: The result is calculated inside your browser and your data is not sent to any server.
How to use it
- Type the value in the bytes box.
- Read the result in gigabytes as you type, and pick the precision you need.
- Swap the direction to convert back, or copy the result.
How it is calculated
GB = B × 1e-9
Multiply the value in bytes by 1e-9 to get gigabytes.
Example
To convert 25 B to gigabytes: 25 × 1e-9 = 2.5e-8 GB.
Conversion table
| Bytes (B) | Gigabytes (GB) |
|---|---|
| 1 | 1e-9 |
| 2 | 2e-9 |
| 3 | 3e-9 |
| 5 | 5e-9 |
| 10 | 1e-8 |
| 20 | 2e-8 |
| 25 | 2.5e-8 |
| 50 | 5e-8 |
| 100 | 1e-7 |
| 250 | 2.5e-7 |
| 500 | 5e-7 |
| 1,000 | 0.000001 |
About the units
- Byte
- A unit of storage equal to exactly 8 bits (an octet in IEC 80000-13), typically enough to store one Latin character.
- Gigabyte
- A decimal unit equal to exactly 10^9 bytes, the unit used by drive makers and mobile data plans.
Limits and caveats
- Results are rounded for display and computed with the browser's floating point precision (about 15 significant digits).
- Both unit factors are exact by their official definitions.
Questions about this tool
How many gigabytes are in one byte?
1 B = 1e-9 GB exactly.
How do I convert bytes to gigabytes?
Use GB = B × 1e-9. For example, 25 B = 2.5e-8 GB.
How many bytes are in one gigabyte?
1 GB = 1,000,000,000 B.
Why does a 1 TB drive show about 931 GB on my computer?
Drive makers count 1 TB as 10^12 bytes, while Windows divides by 2^30 and labels the result GB even though it is really GiB. So 10^12 ÷ 1,073,741,824 gives about 931.32, and no space is missing.
What is the difference between a kilobyte and a kibibyte?
A kilobyte (kB) is a decimal unit of 1000 bytes and a kibibyte (KiB) is a binary unit of 1024 bytes. The same split applies to mega and mebi, giga and gibi, and the gap grows at each step.