◨ DEVELOPER Updated July 25, 2026

Number Base Converter

Convert between binary, octal, decimal, hex, and any base.

Value
From base
—Binary
—Octal
—Decimal
—Hex
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How it works

Your value is parsed from the source base into an exact integer, then re-rendered in every common base at once. Any base from 2 to 36 is supported, using digits 0-9 followed by letters a-z.

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Frequently asked questions

Why is hexadecimal used so often?

Each hex digit maps to exactly four binary bits, so byte values line up neatly as two characters.

Can it convert fractions?

No. This converter works with whole numbers, which covers the usual programming and networking cases.

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