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Gigabytes to Gibibytes Converter GB → GiB

1 gigabyte (GB) = 0.9313225746 gibibytes (GiB). Type a value below — the conversion happens instantly, entirely on your device.

1 GB = 0.9313225746 GiB

1000 gigabytes = 931.32257 gibibytes

1000 × 0.931323 = 931.32257

1 GB equals 0.931323 GiB, so multiplying by 0.931323 converts the value. The result describes the exact same quantity — only the measuring stick changes.
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How to convert gigabytes to gibibytes

gibibytes = gigabytes × 0.9313225746 — multiply the gigabyte value by 0.931323.

Example: 1000 GB = 931.323 GiB.

To convert the other way: gigabytes = gibibytes ÷ 0.9313225746 — or use the dedicated GiB to GB converter .

One decimal gigabyte is 0.9313 GiB — so a "1 TB" (1,000 GB) drive shows as about 931 GiB in Windows. Nothing is missing; the drive maker and the OS are just using different standards.

Gigabytes to Gibibytes conversion table

Gigabytes (GB) Gibibytes (GiB)
0.1 0.093132257
0.25 0.23283064
0.5 0.46566129
1 0.93132257
2 1.8626451
3 2.7939677
4 3.7252903
5 4.6566129
6 5.5879354
7 6.519258
8 7.4505806
9 8.3819032
10 9.3132257
15 13.969839
20 18.626451
25 23.283064
30 27.939677
40 37.252903
50 46.566129
75 69.849193
100 93.132257
250 232.83064
500 465.66129
1000 931.32257

About the units

What is a gigabyte?

A gigabyte (GB) is 1,000,000,000 bytes (decimal standard). Storage devices and mobile data plans are sold in gigabytes; an hour of HD streaming uses roughly 3 GB.

What is a gibibyte?

A gibibyte (GiB) is 1,073,741,824 bytes (2³⁰) — about 7.4% larger than a decimal gigabyte. The gap between GB and GiB explains "missing" drive space.

Frequently asked questions

How many gibibytes are in 1 gigabyte?

1 gigabyte (GB) = 0.9313225746 gibibytes (GiB).

What is the formula to convert gigabytes to gibibytes?

gibibytes = gigabytes × 0.9313225746 — multiply the gigabyte value by 0.931323.

How do I convert GB to GiB without a calculator?

Multiply by 0.931 for a close estimate. Exact factor: 1 GB = 0.9313225746 GiB.

Is this GB-to-GiB converter accurate and private?

Yes. It uses the exact internationally defined conversion factors and computes results locally in your browser — your input is never sent to a server, and the page keeps working offline.

Why does my 1 TB drive show only 931 GB?

The drive contains 1,000,000,000,000 bytes (1 TB decimal). Windows divides by 1,073,741,824 (binary GiB) and displays 931 — labelled "GB" but actually GiB. Both figures describe the same number of bytes.

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