Arithmetic with Binary, Octal, Decimal, Hexadecimal freely, easily.
Do you looking for some kind of calculator which contains easily convert to another base?
This "Convulator" is exactly what you are looking for.
Easily to convert binary/octal/decimal/hexadecimal with simple touch and you don't need to convert to other base to calculate it. Application automatically convert those numbers inside and print on screen which base you selected at Output base.