InfiniBase!

InfiniBase is the only app youll need for converting numbers between bases. InfiniBase supports converting numbers between bases 2 through 36.InfiniBase also has features that other conversion apps dont, including: Conversion of numbers of near infinite length* Automatic conversion as you type Customized keyboard for each number base A variety of sharing options, including printing and emailing*InfiniBase uses the GMP Multi-Precision Library to allow conversion of numbers of any length. Obviously testing infinitely long numbers is not possible, however InfiniBase has been tested with converting some radically huge numbers.