How to convert gigabytes to gibibytes
Formula: GiB = GB × 0.931323
Worked example: 256 GB → 256 × 0.931323 = 238.419 GiB
Multiply gigabytes by 0.9313 to get gibibytes. That is why a 500 GB SSD appears as about 465 GB in Windows, which counts in GiB but writes GB. No space is missing; the units differ.
Gigabytes to gibibytes conversion chart
| Gigabytes (GB) | Gibibytes (GiB) |
|---|---|
| 1 GB | 0.931323 GiB |
| 2 GB | 1.86265 GiB |
| 3 GB | 2.79397 GiB |
| 4 GB | 3.72529 GiB |
| 5 GB | 4.65661 GiB |
| 8 GB | 7.45058 GiB |
| 10 GB | 9.31323 GiB |
| 16 GB | 14.9012 GiB |
| 20 GB | 18.6265 GiB |
| 25 GB | 23.2831 GiB |
| 32 GB | 29.8023 GiB |
| 50 GB | 46.5661 GiB |
| 64 GB | 59.6046 GiB |
| 100 GB | 93.1323 GiB |
| 128 GB | 119.209 GiB |
| 250 GB | 232.831 GiB |
| 256 GB | 238.419 GiB |
| 500 GB | 465.661 GiB |
| 512 GB | 476.837 GiB |
| 1,000 GB | 931.323 GiB |
| 1,024 GB | 953.674 GiB |
What is a gigabyte?
The gigabyte is one billion bytes, the usual unit for phone storage, RAM and mobile data plans. An hour of HD streaming video uses roughly 1.5 to 3 GB depending on the service and quality.
What is a gibibyte?
The gibibyte is 1,073,741,824 bytes, or 1,024 MiB, about 7.4% larger than a gigabyte. RAM modules are binary: a stick sold as 16 GB actually holds 16 GiB. Windows also shows disk sizes in GiB while labeling them GB.