Developer Tool
Free Base Converter Online
Convert numbers between binary, octal, decimal, hexadecimal, and any custom base from 2 to 36. Built for quick debugging, encoding checks, programming exercises, and API work.
Base 2 to 36Large whole numbersPrivate browser conversion
Base Converter
Convert binary, octal, decimal, hexadecimal, and any custom base up to 36.
Convert whole numbers between bases 2 and 36.
Base 16 to base 10
BIN · base 2
11111111
OCT · base 8
377
DEC · base 10
255
HEX · base 16
FF
Grouped output
255
Decimal value
255