Type a number into any of the boxes and it will be converted into all the other bases.

We’ve used normal digits up to base 10 and then the English alphabet for bases beyond that (in the agreed alphabetic order). So numbers in base 2 should use just 1s and 0s; in base 16, the digits 0-9 and the letters a, b, c, d, e and f.

By base 36 the numbers are using digits 0-9 and all the letters a to z. If you try and break it by going to base 37 or above, don’t worry, we have a plan for that as well.