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Conversion
Number Base Converter
Convert numbers between decimal, binary, octal, and hexadecimal bases.

Number Base Converter

Convert numbers between decimal (base 10), binary (base 2), octal (base 8), and hexadecimal (base 16). Essential for programmers, computer science students, and digital electronics.

Number base systems are fundamental to computing. While humans typically use decimal (base 10), computers operate in binary (base 2). Hexadecimal and octal provide more compact representations.

Number Systems:

  • Binary (Base 2): Digits 0-1. Used internally by all digital computers.
  • Octal (Base 8): Digits 0-7. Used in Unix file permissions.
  • Decimal (Base 10): Digits 0-9. Standard human numeral system.
  • Hexadecimal (Base 16): Digits 0-9 and A-F. Used for memory addresses, colors (#FF0000), and byte values.

Quick Reference:

  • 255 decimal = 11111111 binary = 377 octal = FF hex
  • 128 decimal = 10000000 binary = 200 octal = 80 hex
  • 10 decimal = 1010 binary = 12 octal = A hex

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