Convert between decimal, binary, hexadecimal and octal in real time. Type into any field and the others update instantly.
Tip: values can be large integers up to 2^1024. Type into any field to convert live.
Decimal, binary, hex and octal — all synchronized in real time.
Handles numbers beyond 64-bit using exact decimal arithmetic.
No button needed — type and every other base converts instantly.
All conversion happens locally in your browser.
Encode text into binary or hex with our encoders.
Open Binary Converter →