I see in the forum this question raised all the time, and yet the solution that people get usually based on looping and complex math, while there is a simple and much better solution as shown in this code. In this short blog I will wrote a simple and VERY fast solution to convert Decimal number to Binary number, Decimal number to Hexadecimal number, and vise versa without using any loop. My solution for binary base is based on using BITWISE.

Bitwise Operators performs "wise" "bit by bit" manipulations between two expressions of types integers or binaries (binary, bit, int, smallint, tinyint, varbinary, bigint). There are three Bitwise Operators in T-SQL which includes: & (Bitwise AND), | (Bitwise OR), ^ (Bitwise Exclusive OR). In this short post we will explain the behavior of each of these operators by following a simple practical examples.

** This post include several accessories, which you can use in other cases. For example A function to convert integers base ten number into base two number (without using any direct loop).