Plain Math Tools

GB to GiB

1 GB = 0.931322574615 GiB. Enter any amount below to convert it.

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Decimal (drives, networks, macOS)

Binary (Windows, RAM)

Bits (connection speeds)

Why does my drive look smaller?

Windows will show about

How long will a download take?

At full speed it takes

Common GB to GiB conversions

GBGiB
1 GB0.931322574615
10 GB9.313225746155
100 GB93.132257461548
500 GB465.661287307739
1,000 GB931.322574615479
5,000 GB4,656.61287307739
10,000 GB9,313.22574615479
100,000 GB93,132.2574615479
1,000,000 GB931,322.574615479

Decimal units count in thousands (1 GB = 1,000 MB). Binary units count in 1,024s (1 GiB = 1,024 MiB). Windows uses binary but labels it KB, MB and GB, which is why the same file or drive can show two different sizes.

Speeds are in bits: 8 bits make a byte, so a 100 Mbps connection moves at most 12.5 MB per second. Real downloads usually run somewhat slower than the advertised speed.