Convert Gigabyte to Byte
Turn Gigabytes into Bytes in an instant. Type a value below to get an accurate GB → B result, with the formula and a quick-reference table.
1 GB = 1,000,000,000 B
Quick answer: 1 Gigabyte = 1,000,000,000 Byte
Gigabyte to Byte conversion table
| Gigabyte (GB) | Byte (B) |
|---|---|
| 1 GB | 1,000,000,000 B |
| 2 GB | 2,000,000,000 B |
| 5 GB | 5,000,000,000 B |
| 10 GB | 10,000,000,000 B |
| 20 GB | 20,000,000,000 B |
| 50 GB | 50,000,000,000 B |
| 100 GB | 100,000,000,000 B |
| 500 GB | 500,000,000,000 B |
| 1,000 GB | 1,000,000,000,000 B |
How to convert Gigabyte to Byte
To convert Gigabytes to Bytes, multiply the value by 1,000,000,000.
- Take your measurement in Gigabytes.
- Multiply it by 1,000,000,000 — the number of Bytes in one Gigabyte.
- The result is the same amount, expressed in Bytes.
To go the other way, multiply Bytes by 1e-9 — or simply divide by 1,000,000,000.
For example, an HD movie is about 5 GB, which is 5,000,000,000 B.
About Gigabyte and Byte
A gigabyte is 1,000 megabytes (one billion bytes). It sizes movies, phone storage and mobile data plans.
A byte is 8 bits, the basic building block for file sizes. It is the foundation for kilobytes, megabytes and gigabytes.
The Gigabyte is a decimal (SI) unit while the Byte comes from the digital system — which is exactly why this conversion comes up so often. One Gigabyte equals 1,000,000,000 Bytes.
Other data storage conversions
Frequently asked questions
How many Bytes are in a Gigabyte?
1 Gigabyte equals 1,000,000,000 Byte (GB → B). To convert any amount, multiply the number of Gigabytes by 1,000,000,000.
How do I convert Gigabyte to Byte?
Enter the number of Gigabytes in the converter above and read the result in Bytes. It applies the exact GB → B factor instantly, with full precision.
Is the Gigabyte to Byte converter free?
Yes — it is completely free and unlimited, needs no sign-up, and runs right in your browser, so it is instant and private.
Is the conversion accurate?
Yes. It uses the internationally defined data storage factors and full floating-point precision, then rounds the display to a clean, readable number.