• Base 11 to Base 31 Conversion Table
• Base 8 to Base 23 Conversion Table
• Base 27 to Base 34 Conversion Table
• Base 9 to Base 27 Conversion Table
• Binary (base 2) to Base 2 Conversion Table
• Base 15 to Hexadecimal (base 16) Conversion Table
• Quinary (base 5) to Base 27 Conversion Table
• Base 12 to Hexadecimal (base 16) Conversion Table

Quaternary is the base-4 numeral system. It uses the digits 0, 1, 2 and 3 to represent any real number.

The vigesimal or base 20 numeral system is based on twenty (in the same way in which the decimal numeral system is based on ten).