How to Convert Gibibytes to Gigabytes (GiB to GB)
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 gigabytes by hand, with examples and a quick-reference table.
The conversion
To convert gibibytes to gigabytes, multiply the value by 1.073741824. To go the other way, divide by the same number (or multiply by 0.9313225746). For a quick estimate, multiply by about 1.1.
Gigabytes = gibibytes × 1.073741824
Worked examples
- 3 GiB = 3.2212 GB
- 12.5 GiB = 13.4218 GB
- 75 GiB = 80.5306 GB
Gibibytes to Gigabytes table
| Gibibytes | Gigabytes |
|---|---|
| 1 GiB | 1.0737 GB |
| 2 GiB | 2.1475 GB |
| 5 GiB | 5.3687 GB |
| 10 GiB | 10.7374 GB |
| 20 GiB | 21.4748 GB |
| 25 GiB | 26.8435 GB |
| 50 GiB | 53.6871 GB |
| 100 GiB | 107.3742 GB |
| 250 GiB | 268.4355 GB |
| 500 GiB | 536.8709 GB |
| 1,000 GiB | 1,073.74 GB |
Common questions
Is GiB to GB 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 Gigabytes 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.
Forgetting squared and cubed units
Area and volume factors are the length factor squared or cubed, so 1 m² is about 10.76 sq ft, not 3.28.
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.
Background
Singapore adopted the metric system in the 1970s, replacing imperial units and traditional Chinese measures in most official uses. Metric units are now standard in schools, trade and government, but older units survive in property, markets and imported goods.
A conversion table is handy for common values, but a calculator is faster and avoids interpolation errors for anything in between.
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.
For any value, use the Gibibytes to Gigabytes Converter or browse all data storage converters.
Run your own numbers: Gibibytes to Gigabytes Converter