Simple and intuitive converter for bases [2;26]
Just run BaseConverter.py with Python3.X
In Quick Converter, enter your value in either Decimal/Hexadecimal/Binary entry and click Convert, your value will be converted in the two other bases.
In Complete Converter, drag the upper scale to your original base and enter your value in the entry just right to it, drag the scale below to the base you want and click convert.