How the megabits-to-megabytes converter works

Eight data bits combining into one byte-sized block

Enter a value in megabits or megabytes. The second field updates immediately, and the swap button reverses the conversion.

The difference is eight bits per byte

A byte contains exactly eight bits. Because both units use the same mega prefix, it cancels out:

\mathrm{MB}=\frac{\mathrm{Mb}}{8}

Divide megabits by 8 to get megabytes. Multiply megabytes by 8 to go back.

Mb usually labels a number of bits, while MB labels bytes. Adding “per second” turns both into rates, but the factor of eight stays the same.

The converter does not estimate real download time. Protocol overhead, Wi-Fi quality and the server can make actual throughput lower.

Capitalisation and the missing “per second” cause most mistakes.

100 megabits equal 12.5 megabytes.

No. Mbps means megabits per second; MB/s means megabytes per second. Divide Mbps by 8 to get the theoretical MB/s rate.

An uppercase B denotes bytes, while a lowercase b denotes bits.

No. MB is normally decimal, while MiB is binary and contains 1,048,576 bytes.

The quantities are equivalent, but transferred data can include protocol overhead and the displayed file size may use a different prefix convention.

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