Learn arithmetic in other bases, from base 2 (binary) through base 16 (hexadecimal). Basic facts are provided in the addition and multiplication tables for single-digit numbers. A simple four-function calculator does computations involving larger numbers.

The "CE" button deletes the last digit(s) of the number currently being entered. You can change the operation before clicking "=".

Contributed by: Marc Brodie (Wheeling Jesuit University)