Base 3 to Base 21 Converter

Base 3

In base 3, each digit in a number represents the number of copies of that power of 3. That is, the first digit tells you how many ones you have; the second tells you how many 3s you have; the third tells you how many 3x3 you have; the fourth tells you how many 3x3x3 you have; and so on.

Base 21

In base 21, each digit in a number represents the number of copies of that power of 21. That is, the first digit tells you how many ones you have; the second tells you how many 21s you have; the third tells you how many 21x21 you have; the fourth tells you how many 21x21x21 you have; and so on.