binary (base 2) to decimal (base 10) converter

Convert binary (base 2) to decimal (base 10) in the Number bases family. See a sample calculation, unit definitions, and the interactive converter.

Example conversion: 1 bin

1 decimal (base 10)

This example is calculated from the same unit registry used by the interactive converter.

Formula and unit definitions

Represent integers in binary, octal, decimal and hexadecimal.

Parse the integer in the selected source base, then represent its value in the target base.

Source unit: binary (base 2) (bin), factor Special relationship, offset 0.

Target unit: decimal (base 10) (dec), factor Special relationship, offset 0.

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Important note

The calculation is performed locally from the listed unit definitions. Display results are rounded for readability; high-precision and regulated work should use the governing standard and appropriate significant figures.

For high-precision, regulated or safety-critical use, check the underlying standard and its required precision. Historical and approximate units are identified in their names or family descriptions.

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