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Converters Tool

Base Converter (Dec / Bin / Hex / Oct)

Convert numbers between decimal, binary, hexadecimal, and octal — all four at once.

Privacy-first workflows
Fast and simple
100% Free, no signup
Tip: Edit any field — the others update automatically. Negative numbers and decimals aren't supported.
How it works

How to convert number bases

STEP 01
Type a value in any of the four base fields.
STEP 02
The other three update automatically.
STEP 03
Copy any base's value.
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FAQ

Common questions