Base Converter is a Mac OSX utility which converts between several types of numbering systems: Decimal, Hex, Octal, Binary, BCD, ASCII, Unicode, and UTF8.

Type a value into any one of the inputs, and it is immediately converted into the each of the other types. 

Each input is filtered to the available digits:

  Decimal: 0-9
  Hex: 0-9,A-F
  Octal: 0-7
  Binary: 0-1
  BCD: 0-9
  ASCII: ASCII, Unicode, and UTF8 Characters

The decimal input and output can be switched between signed and unsigned. 

The converter is triggered automatically when you enter a value in one of the input fields. 

It is possible to copy from all of the input and output fields. You can cut, copy, paste, and delete in the input fields.

HELP and Instructions Page Link