How to Convert Gibibytes to Bytes (GiB to B)
Data conversions explain why a 1 TB drive shows less space on your computer and help compare mobile plans sold in gigabytes. This guide shows how to convert gibibytes into bytes by hand, with examples and a quick-reference table.
The conversion
To convert gibibytes to bytes, multiply the value by 1.073742e+09. To go the other way, divide by the same number (or multiply by 9.313226e-10). For a quick estimate, multiply by about 1,100,000,000.
Bytes = gibibytes × 1.073742e+09
Worked examples
- 3 GiB = 3,221,225,472 B
- 12.5 GiB = 13,421,772,800 B
- 75 GiB = 80,530,636,800 B
Gibibytes to Bytes table
| Gibibytes | Bytes |
|---|---|
| 1 GiB | 1,073,741,824 B |
| 2 GiB | 2,147,483,648 B |
| 5 GiB | 5,368,709,120 B |
| 10 GiB | 10,737,418,240 B |
| 20 GiB | 21,474,836,480 B |
| 25 GiB | 26,843,545,600 B |
| 50 GiB | 53,687,091,200 B |
| 100 GiB | 107,374,182,400 B |
| 250 GiB | 268,435,456,000 B |
| 500 GiB | 536,870,912,000 B |
| 1,000 GiB | 1.073742e+12 B |
Common questions
Is GiB to B exact?
The factors used here are the internationally defined values where they exist; results are rounded for display only.
How do I convert back?
Use the Bytes to Gibibytes converter.
Mistakes to avoid
Dropping the units
A bare number without a unit is easy to misread later. Always write the unit with the result.
Rounding the factor too early
Using 3 instead of 3.28 for feet per metre introduces an error of almost 9% before you have started.
Mixing similar-sounding units
US and imperial gallons, pints and tons are different sizes, and decimal kilobytes differ from binary kibibytes.
Background
Unit conversion is simply multiplication by a fixed ratio. The ratio between two units of the same quantity never changes, so once you know it you can convert any value in either direction.
Writing the units next to every number while you work is the simplest way to avoid mistakes. If the units do not cancel to leave the one you want, the calculation is set up wrongly.
A conversion table is handy for common values, but a calculator is faster and avoids interpolation errors for anything in between.
For any value, use the Gibibytes to Bytes Converter or browse all data storage converters.
Run your own numbers: Gibibytes to Bytes Converter