GB to B
One GB equals 1000000000 B. Type any number and the answer appears as you type — the maths happens in your browser.
Result
The same value in every unit
| Unit | Value |
|---|
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Common values
| GB | B |
|---|---|
| 1 GB | 1000000000 B |
| 2 GB | 2000000000 B |
| 3 GB | 3000000000 B |
| 5 GB | 5000000000 B |
| 10 GB | 10000000000 B |
| 15 GB | 15000000000 B |
| 20 GB | 20000000000 B |
| 25 GB | 25000000000 B |
| 50 GB | 50000000000 B |
| 100 GB | 100000000000 B |
| 500 GB | 500000000000 B |
| 1000 GB | 1000000000000 B |
How to use
- Enter the number of GB in the field.
- The result in B updates on every keystroke.
- Use the table below for the values people look up most often.
Formula and reverse conversion
The formula
To convert by hand: B = GB × 1000000000. Going back the other way, one B is 1e-9 GB.
Decimal and binary units are not the same
Storage is sold in decimal units — a kilobyte is 1000 bytes — while operating systems often count in binary, where a kibibyte is 1024. That is the whole reason a “500 GB” drive shows up as roughly 465 GiB in the system.
B = GB × 1000000000
Frequently asked questions
How many B are in one GB?
One GB is 1000000000 B.
How do I convert GB to B?
Multiply by the factor: B = GB × 1000000000.
Is the result exact?
The factors are the exact legal definitions, and up to ten significant digits are kept in the answer. Rounding happens only in the display.
How do I convert B back to GB?
One B is 1e-9 GB — or open the reverse page linked below.