Plain Math Tools

MiB to MB

1 MiB = 1.048576 MB. 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 MiB to MB conversions

MiBMB
1 MiB1.048576
2 MiB2.097152
5 MiB5.24288
10 MiB10.48576
25 MiB26.2144
50 MiB52.4288
100 MiB104.8576
250 MiB262.144
500 MiB524.288

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.