How do I convert gibibytes to gigabytes?

Multiply the number of gibibytes by 1.073741824. For example, 5 GiB = 5.36871 GB.

How many gigabytes are in one gibibyte?

One gibibyte equals 1.073741824 gigabytes.

12 gibibytes equals 12.8849 gigabytes.

Use the reverse Gigabytes to Gibibytes converter: multiply gigabytes by 0.9313225746.

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

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

From

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To convert gibibytes to gigabytes, use this formula:

GB = GiB × 1.073741824 (or divide by 0.9313225746)

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.

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).

How do I convert gibibytes to gigabytes?: Multiply the number of gibibytes by 1.073741824. For example, 5 GiB = 5.36871 GB.
How many gigabytes are in one gibibyte?: One gibibyte equals 1.073741824 gigabytes.
What is 12 GiB in gigabytes?: 12 gibibytes equals 12.8849 gigabytes.
How do I convert gigabytes back to gibibytes?: Use the reverse Gigabytes to Gibibytes converter: multiply gigabytes by 0.9313225746.

Need other units? Use the full data converter.

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