About the gb to gib calculation
One gigabyte is exactly 0.931323 gibibytes, so converting between them is a single multiplication. Enter any value above and the result updates as you type. Decimal gigabyte. This is why a "1 TB" drive shows as roughly 931 GB in your operating system. Binary gigabyte — 1,024³ bytes, about 7.4% larger than a decimal GB.
Formula
GiB = GB × 0.931323
1 GB = 0.931323 GiB
1 GiB = 1.0737 GBWorked example
To convert 1 GB, multiply by 0.931323: 1 × 0.931323 = 0.931323 GiB.
Frequently asked questions
How many gibibytes are in a gigabyte?
There are 0.931323 gibibytes in one gigabyte. To convert any amount, multiply the number of gigabytes by 0.931323.
How do I convert gibibytes back to gigabytes?
Divide instead of multiplying, or equivalently multiply by 1.0737. One gibibyte is 1.0737 gigabytes.
Is this conversion exact?
Yes, provided both sides use the same convention. Decimal units (KB, MB, GB) are powers of 1,000 and binary units (KiB, MiB, GiB) are powers of 1,024. Both are exact — the confusion comes from software labelling binary values with decimal names.
Is there anything that catches people out here?
This is the conversion behind the "missing" storage on every new drive. A decimal GB is smaller than a binary GiB by about 7.4%.
Sources
- IEC 80000-13 — binary and decimal prefixes for information units