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Gigabytes to Gibibytes (GB to GiB)

Convert gigabytes to gibibytes: 1 GB = 0.931323 GiB. Exact conversion factor, formula, 18-row table and worked examples, with JSON API and MCP access.

Formula

1 GB = 0.931323 GiB

gibibytes = gigabytes × 0.9313225746 — reverse: gigabytes = gibibytes × 1.073741824

The factor is derived from the SI definitions of both units (base unit: B) as listed in NIST SP 811; results on this page are shown to 6 significant figures, the API returns up to 12.

Worked examples

Gigabytes to gibibytes conversion table

Gigabytes (GB)Gibibytes (GiB)
10.931323
21.86265
43.72529
87.45058
1614.9012
3229.8023
6459.6046
10093.1323
128119.209
256238.419
500465.661
512476.837
1000931.323
1024953.674
20481907.35
40963814.7
81927629.39
100009313.23

FAQ

How many gibibytes are in one gigabyte?

1 GB = 0.931323 GiB. The factor comes from the SI definitions of both units (NIST SP 811 / BIPM), so it is exact or correct to at least 10 significant figures.

What is the formula to convert gigabytes to gibibytes?

Multiply the value in gigabytes by 0.9313225746: gibibytes = gigabytes × 0.9313225746. For example, 1.5 GB = 1.39698 GiB.

How do I convert gibibytes back to gigabytes?

Multiply by the inverse factor 1.073741824 (gigabytes = gibibytes × 1.073741824), or use the gibibytes-to-gigabytes page.

Related conversions

Machine access

Sources