Enjoy one of the best programmer's calculators! You can calculate in four numeral systems and transfer numbers between them. Supports DEC(10x) HEX(16x) OCT(8x) and BIN(2x) numeral systems. If you need more you can use the numeral system converter, that can convert numbers between any numeral system from 2x to 29x. Very simple interface can make your calculations really comfortable and quick. Are you an IT engineer? This calc is what you need.