Base 21 to Base 2 Converter

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.

Base 2

In base 2, each digit in a number represents the number of copies of that power of 2. That is, the first digit tells you how many ones you have; the second tells you how many 2s you have; the third tells you how many 2x2 you have; the fourth tells you how many 2x2x2 you have; and so on.