Digital tools

Data-size converter

Know the difference between MB, MiB, bits and bytes.

How it works

1 byte = 8 bits; 1 kB = 1000 bytes; 1 KiB = 1024 bytes

Decimal prefixes use powers of 1000; binary prefixes use powers of 1024. Example: 1 MiB = 1.048576 MB.

How to use this tool

Enter a size and choose units carefully: lowercase b means bit; uppercase B means byte. Use KiB, MiB or GiB for binary quantities.

Worked example

One mebibyte is 1,048,576 bytes. Dividing by 1,000,000 gives 1.048576 megabytes.

Limits of this tool

Results use floating-point arithmetic. Beyond roughly 15 significant digits, byte-level accuracy is not guaranteed. This is not a bandwidth or file-download-time calculator.

Good to know

Results are computed with 64-bit floating-point numbers. Very large or tiny values can lose precision; the display rounds only after calculation. Non-finite results are rejected.

Everything runs on your device. No inputs are sent to a server.

Data-size converter

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