Number Base Converter

Convert between binary, octal, decimal and hex — plus the bit tricks that show up in LeetCode problems.

Value

Input base

n << 1 = 84 (double)

n >> 1 = 21 (halve, floor)

n & 1 = 0 (even)

n & (n-1)= 40 (clears lowest set bit)

popcount = 3 (set bits)

How to use it

Type a value and pick which base you typed it in.
Every other base updates instantly — click any row to copy it.
Scroll down for the bitwise reference: shifts, parity, clearing the lowest set bit and popcount.