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Number Base Converter

Convert numbers between binary, octal, decimal, hexadecimal and any base from 2 to 36. Handles huge numbers.

Type a number and choose the base it’s written in to see it in every other base. Arbitrarily large numbers are supported.

Questions

How do I convert binary to decimal?

Choose “Binary (2)” and type the 0s and 1s – the decimal value appears instantly.