How do I convert gigabytes to gibibytes?

Multiply the number of gigabytes by 0.9313225746. For example, 5 GB = 4.65661 GiB.

How many gibibytes are in one gigabyte?

One gigabyte equals 0.9313225746 gibibytes.

12 gigabytes equals 11.1759 gibibytes.

Use the reverse Gibibytes to Gigabytes converter: multiply gibibytes by 1.073741824.

Convert gigabytes (GB) to gibibytes (GiB) instantly — type a value below.

1 gigabyte (GB) = 0.9313225746 gibibytes (GiB)
1 gibibyte (GiB) = 1.073741824 gigabytes (GB)

From

—

To convert gigabytes to gibibytes, use this formula:

GiB = GB × 0.9313225746 (or divide by 1.073741824)

A gigabyte is 1,000,000,000 bytes (SI decimal). That is why a "500 GB" drive shows about 465 GB in Windows, which actually counts in gibibytes (GiB).

A gibibyte is 1,024 MiB = 1,073,741,824 bytes (IEC binary prefix). Windows displays it as "GB", which is why drives look smaller than advertised.

How do I convert gigabytes to gibibytes?: Multiply the number of gigabytes by 0.9313225746. For example, 5 GB = 4.65661 GiB.
How many gibibytes are in one gigabyte?: One gigabyte equals 0.9313225746 gibibytes.
What is 12 GB in gibibytes?: 12 gigabytes equals 11.1759 gibibytes.
How do I convert gibibytes back to gigabytes?: Use the reverse Gibibytes to Gigabytes converter: multiply gibibytes by 1.073741824.

Need other units? Use the full data converter.

Sources: NIST SP 811 · BIPM SI Brochure · NIST Handbook 44. Last reviewed: 2026-10 · FreeUnitConverters