Number Base Converter
Free, instant conversions between binary, decimal, hexadecimal, octal, ASCII, and Base64 — no signup, no ads, no nonsense.
All Converters
Decimal to Binary Converter
decimal → binary
Binary to Decimal Converter
binary → decimal
Decimal to Hexadecimal Converter
decimal → hexadecimal
Hexadecimal to Decimal Converter
hexadecimal → decimal
Decimal to Octal Converter
decimal → octal
Octal to Decimal Converter
octal → decimal
Binary to Hexadecimal Converter
binary → hexadecimal
Hexadecimal to Binary Converter
hexadecimal → binary
Binary to Octal Converter
binary → octal
Octal to Binary Converter
octal → binary
Hexadecimal to Octal Converter
hexadecimal → octal
Octal to Hexadecimal Converter
octal → hexadecimal
Text to ASCII Converter
text → ascii
ASCII to Text Converter
ascii → text
Text to Base64 Converter
text → base64
Base64 to Text Converter
base64 → text
Text to Binary Converter
text → binary
Binary to Text Converter
binary → text
Text to Hexadecimal Converter
text → hexadecimal
Hexadecimal to Text Converter
hexadecimal → text
Reference Tables
ASCII Table
Complete ASCII character reference table.
Binary Numbers Table
Binary numbers table from 0 to 256.
Hexadecimal Numbers Table
Hexadecimal numbers from 0x00 to 0xFF.
Octal Numbers Table
Octal numbers table from 0 to 377.
Powers of Two
Powers of two from 2⁰ to 2³².
Base64 Alphabet
The complete Base64 alphabet.