Handy Units
GB to GiBGB → GiB
1 GB = 0.931323 GiB · 1 GiB = 1.07374 GB
Formula
GiB ≈ GB ÷ 1.07374
Example: 64 GB = 64 ÷ 1.07374 = 59.6046 GiB
These units differ only by a fixed factor: multiply by it to convert, divide to go back. The factors are exact international definitions (for example 1 inch = 2.54 cm exactly); results are rounded only for display.
GB and GiB chart
| GB (GB) | GiB (GiB) |
|---|---|
| 1 GB | 0.931323 GiB |
| 8 GB | 7.45058 GiB |
| 16 GB | 14.9012 GiB |
| 32 GB | 29.8023 GiB |
| 64 GB | 59.6046 GiB |
| 128 GB | 119.209 GiB |
| 256 GB | 238.419 GiB |
| 512 GB | 476.837 GiB |
| 1,000 GB | 931.323 GiB |
| GiB (GiB) | GB (GB) |
|---|---|
| 1 GiB | 1.07374 GB |
| 2 GiB | 2.14748 GB |
| 3 GiB | 3.22123 GB |
| 4 GiB | 4.29497 GB |
| 5 GiB | 5.36871 GB |
| 10 GiB | 10.7374 GB |
| 15 GiB | 16.1061 GB |
| 20 GiB | 21.4748 GB |
| 25 GiB | 26.8435 GB |
| 50 GiB | 53.6871 GB |
| 100 GiB | 107.374 GB |
| 500 GiB | 536.871 GB |
| 1,000 GiB | 1,073.74 GB |
About these units
Gigabyte (GB)Gigabytes, decimal: 1 GB = 1,000 MB, the way drive and phone makers count.
Gibibyte (GiB)Gibibytes, binary: 1 GiB = 1,024 MiB. What Windows shows as “GB” is really GiB.
Questions
How many GiB are in 1 GB?
1 GB = 0.931323 GiB.
How many GB are in 1 GiB?
1 GiB = 1.07374 GB.
Why does a 256 GB drive show only 238 GB?
Makers count 1 GB as 1000³ bytes; Windows counts 1024³ bytes but still labels it “GB” (really GiB): 256 GB ≈ 238.4 GiB.