Base conversions
This tool converts an integer between any two bases, from 2 to 64, showing each time the correct method for the chosen pair of bases: positional expansion (towards base 10), successive division by the target base (from base 10), 4-bit grouping for direct conversion between base 2 and base 16, or bridging through base 10 for any other pair of non-decimal bases. In every case the coefficients that multiply the powers of the base are highlighted, to make the link between the digits of the starting number and the calculation that uses them immediately clear.
Step 1 — CHOOSE THE BASES
Step 2 — ENTER THE NUMBER
You can enter the number using digits and letters (upper- and lower-case have different values).
You can also use parentheses: each group like (12) represents one digit by its decimal value; the two forms can be mixed.