1 GiB (gibibyte) = 1,073,741,824 bytes = 1.073741824 GB. To convert GiB to GB, multiply by 1.073741824. To convert GB to GiB, divide by 1.073741824 (1 GB ≈ 0.9313 GiB).
Formula
GB = GiB × 1,073,741,824 ÷ 1,000,000,000. GiB = GB × 1,000,000,000 ÷ 1,073,741,824. A GiB is 230 bytes (binary, IEC); a GB is 109 bytes (decimal, SI). A GiB is 7.37% larger.
GiB to GB table
| GiB | GB | GB to GiB |
|---|---|---|
| 1 GiB | 1.074 GB | 1 GB = 0.931 GiB |
| 4 GiB | 4.295 GB | 4 GB = 3.725 GiB |
| 8 GiB | 8.590 GB | 8 GB = 7.451 GiB |
| 16 GiB | 17.180 GB | 16 GB = 14.901 GiB |
| 32 GiB | 34.360 GB | 32 GB = 29.802 GiB |
| 64 GiB | 68.719 GB | 64 GB = 59.605 GiB |
| 128 GiB | 137.439 GB | 128 GB = 119.209 GiB |
| 256 GiB | 274.878 GB | 256 GB = 238.419 GiB |
| 512 GiB | 549.756 GB | 512 GB = 476.837 GiB |
| 1,024 GiB | 1,099.512 GB | 1,024 GB = 953.674 GiB |
Why does my 1 TB drive show 931 GB?
Drive makers label 1 TB = 1,000,000,000,000 bytes. Windows divides by 1,073,741,824 and labels the result “GB”: 1,000,000,000,000 ÷ 1,073,741,824 = 931.32 GiB. No space is missing. More in MB vs MiB.
Where you see GiB
Linux tools (free -h, df -h), Kubernetes memory limits (Gi), cloud VM RAM sizes and Windows Explorer (which shows GiB but labels them GB).
Related: MB vs MiB, what is a gigabyte, GB to MB, byte to MB converter.
FAQ
How many GB is 1 GiB?
1 GiB is 1.073741824 GB (1,073,741,824 bytes).
Is GiB bigger than GB?
Yes. 1 GiB is about 7.37% larger than 1 GB.
How many GiB is 1 GB?
1 GB is about 0.9313 GiB (1,000,000,000 ÷ 1,073,741,824).
What is 16 GiB in GB?
16 GiB × 1.073741824 = 17.18 GB.
Does Windows use GB or GiB?
Windows Explorer calculates sizes in GiB (powers of 1,024) but labels them GB.