Number Base Converter

Convert numbers between different bases including binary, octal, decimal, hexadecimal, and more. Supports bases from 2 to 36 with instant conversion.

Binary

(Base 2)
Binary system used in computers and digital electronics

Octal

(Base 8)
Octal system often used in computing as shorthand for binary

Decimal

(Base 10)
Decimal system used in everyday mathematics

Hexadecimal

(Base 16)
Hexadecimal system used in computing and web development

Additional Bases

Ternary (3)

Quaternary (4)

Quinary (5)

Senary (6)

Septenary (7)

Nonary (9)

Undecimal (11)

Duodecimal (12)

Vigesimal (20)

Base36 (36)

Number Base Information

Common Bases:

  • Binary (2): Used in computer systems (0, 1)
  • Octal (8): Unix permissions, assembly (0-7)
  • Decimal (10): Standard mathematics (0-9)
  • Hexadecimal (16): Computing, colors (0-9, A-F)

Usage Tips:

  • • Enter a number in any base to see all conversions
  • • Use A-Z for digits above 9 in higher bases
  • • Binary values are formatted with spaces every 4 bits
  • • Maximum supported base is 36 (0-9, A-Z)