Number Base Converter Toolkit

Convert between binary, octal, decimal and hexadecimal, plus a general 2–36 base converter. Everything runs locally in your browser, supports big numbers, no upload.

Open General Base Converter

Base Conversion Tools

General Base Converter

Convert between any base from 2–36, big numbers

Decimal → Binary

Convert a decimal number to binary

Binary → Decimal

Convert a binary number to decimal

Decimal → Octal

Convert a decimal number to octal

Octal → Decimal

Convert an octal number to decimal

Decimal → Hex

Convert a decimal number to hexadecimal

Hex → Decimal

Convert a hexadecimal number to decimal