Convert Gigabytes to Gibibytes (GB to GiB)
1 gigabyte (GB) = 0.9313225746 gibibytes (GiB). 1 GiB = 1.073741824 GB. Example: 256 GB = 256 × 0.9313225746 = 238.4185791 GiB.
Also searched as GB to GiB, gigabytes to gibibytes and why does my drive show less space.
1 GB = 0.9313225746 GiB
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk gigabyte to gibibyte converter to paste a column from Excel.
How to Convert Gigabyte to Gibibyte
- 1 GB = 0.9313225746 GiB
- 1 GiB = 1.073741824 GB
- Example: convert 256 GB to GiB: 256 GB = 256 × 0.9313225746 GiB = 238.4185791 GiB
Formula
GiB = GB × 0.9313225746155
or GiB = GB ÷ 1.073741824
Derivation from SI units:
- 1 GB = 10⁹ bytes = 8 × 10⁹ bits (decimal, SI).
- 1 GiB = 2³⁰ bytes = 1,073,741,824 bytes.
- 1 GB = 8000000000 bit ÷ 8589934592 bit per GiB = 0.9313225746155 GiB
Both units are defined exactly, so the factor is exact. Gigabyte definition: gigabyte; Gibibyte definition: gibibyte.
Worked examples
- A 256 GB SSD shows as 238.4185791 GiB in Windows.
256 GB × 0.9313225746 = 238.4185791 GiB - A 1000 GB (1 TB) drive is 931.3225746 GiB.
1000 GB × 0.9313225746 = 931.3225746 GiB
Gigabyte to Gibibyte conversion table
| Gigabytes (GB) | Gibibytes (GiB) |
|---|---|
| 1 GB | 0.9313225746 GiB |
| 2 GB | 1.862645149 GiB |
| 4 GB | 3.725290298 GiB |
| 8 GB | 7.450580597 GiB |
| 16 GB | 14.90116119 GiB |
| 32 GB | 29.80232239 GiB |
| 64 GB | 59.60464478 GiB |
| 100 GB | 93.13225746 GiB |
| 128 GB | 119.2092896 GiB |
| 256 GB | 238.4185791 GiB |
| 500 GB | 465.6612873 GiB |
| 1000 GB | 931.3225746 GiB |
Where it's used
Advertised drive and phone capacities in decimal gigabytes are converted to gibibytes to predict what Windows, RAM tools and Linux report. Multiply by 0.9313.
Gigabyte to other data storage units
| Conversion | 1 GB equals |
|---|---|
| gigabyte to gibibyte | 0.9313225746 GiB |
| gigabyte to byte | 1000000000 B |
| gigabyte to kilobyte | 1000000 kB |
| gigabyte to megabyte | 1000 MB |
| gigabyte to terabyte | 0.001 TB |
| gigabyte to bit | 8000000000 bit |
| gigabyte to megabit | 8000 Mbit |
| gigabyte to kibibyte | 976562.5 KiB |
Show 5 more units
| gigabyte to mebibyte | 953.6743164 MiB |
|---|---|
| gigabyte to kilobit | 8000000 kbit |
| gigabyte to gigabit | 8 Gbit |
| gigabyte to petabyte | 0.000001 PB |
| gigabyte to tebibyte | 0.0009094947018 TiB |
Frequently asked questions
Is GB the same as GiB?
No: 1 GB = 10⁹ bytes and 1 GiB = 2³⁰ bytes, so 1 GB = 0.9313225746 GiB. The gap grows with each prefix: 2.4 % at kilo, 7.4 % at giga, 10 % at tera.
How many gibibytes are in 1 gigabyte?
1 GB = 0.9313225746 GiB.
How do I convert gigabytes to gibibytes?
Multiply the value in GB by 0.9313225746, or divide it by 1.073741824. For example, 256 GB × 0.9313225746 = 238.4185791 GiB.
Is the GB to GiB conversion exact?
Yes. Both units are defined exactly, so the ratio is exact; its decimal form does not terminate and is shown here to 10 significant figures (more with the precision selector).
Sources
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 7 (SI prefixes); hertz, Table 4.
- Prefixes for binary multiples (kibi, mebi, gibi…, adopted by the IEC and now in IEC 80000-13), National Institute of Standards and Technology , Prefixes for binary multiples.
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Section 3, note on binary prefixes.
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Gigabytes to Gibibytes (GB to GiB). Retrieved October 25, 2026, from https://scientificconverters.com/data-storage/gigabytes-to-gibibytes/
IEEE
Scientific Converters, "Convert Gigabytes to Gibibytes (GB to GiB)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/data-storage/gigabytes-to-gibibytes/