How to convert gigabytes to gibibytes
- Take the value in gigabytes.
- Use the formula gibibytes = gigabytes × 0.9313225746.
- For example, 64 GB is 59.6 GiB.
About gigabytes and gibibytes
A gigabyte (GB) is 1,000,000,000 bytes. A gibibyte (GiB) is 1,024 × 1,024 × 1,024 = 1,073,741,824 bytes, about 7.4% more. Divide GB by 1.073742, or multiply by 0.931323, to get GiB.
This is the gap behind the “missing” space on new drives. A drive sold as 1 TB holds 1,000 GB. Windows counts in GiB but labels them GB, so it shows 1,000 ÷ 1.073742 = 931.32 and calls it 931 GB. The gap grows with each prefix: about 2.4% for KB, 4.9% for MB, 7.4% for GB and 10% for TB.
Examples
- 64 GB (a 64 GB USB stick) is 59.6 GiB
- 256 GB (a 256 GB SSD) is 238.42 GiB
- 500 GB (a 500 GB SSD) is 465.66 GiB
- 1,000 GB (a drive sold as 1 TB) is 931.32 GiB
Gigabytes to gibibytes chart
| Gigabytes (GB) | Gibibytes |
|---|---|
| 1 | 0.931 |
| 2 | 1.86 |
| 4 | 3.73 |
| 8 | 7.45 |
| 16 | 14.9 |
| 32 | 29.8 |
| 64 | 59.6 |
| 100 | 93.13 |
| 120 | 111.76 |
| 128 | 119.21 |
| 240 | 223.52 |
| 250 | 232.83 |
| Gigabytes (GB) | Gibibytes |
|---|---|
| 256 | 238.42 |
| 480 | 447.03 |
| 500 | 465.66 |
| 512 | 476.84 |
| 1,000 | 931.32 |
| 2,000 | 1,862.65 |
| 3,000 | 2,793.97 |
| 4,000 | 3,725.29 |
| 6,000 | 5,587.94 |
| 8,000 | 7,450.58 |
| 10,000 | 9,313.23 |