How to Convert Gigabytes to Gibibytes (GB to GiB)
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 gigabytes into gibibytes by hand, with examples and a quick-reference table.
The conversion
To convert gigabytes to gibibytes, multiply the value by 0.9313225746. To go the other way, divide by the same number (or multiply by 1.073741824). For a quick estimate, multiply by about 0.93.
Gibibytes = gigabytes × 0.9313225746
Worked examples
- 3 GB = 2.794 GiB
- 12.5 GB = 11.6415 GiB
- 75 GB = 69.8492 GiB
Gigabytes to Gibibytes table
| Gigabytes | Gibibytes |
|---|---|
| 1 GB | 0.931323 GiB |
| 2 GB | 1.8626 GiB |
| 5 GB | 4.6566 GiB |
| 10 GB | 9.3132 GiB |
| 20 GB | 18.6265 GiB |
| 25 GB | 23.2831 GiB |
| 50 GB | 46.5661 GiB |
| 100 GB | 93.1323 GiB |
| 250 GB | 232.8306 GiB |
| 500 GB | 465.6613 GiB |
| 1,000 GB | 931.3226 GiB |
Common questions
Is GB to GiB 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 Gibibytes to Gigabytes converter.
Mistakes to avoid
Mixing similar-sounding units
US and imperial gallons, pints and tons are different sizes, and decimal kilobytes differ from binary kibibytes.
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.
Dropping the units
A bare number without a unit is easy to misread later. Always write the unit with the result.
Background
Many conversion factors are exact by definition. The inch has been defined as exactly 2.54 centimetres since 1959, and the pound as exactly 0.45359237 kilograms, so conversions involving them can be as precise as you need.
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.
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.
For any value, use the Gigabytes to Gibibytes Converter or browse all data storage converters.
Run your own numbers: Gigabytes to Gibibytes Converter