A hex converter is a tool that can convert text and numbers into hexadecimal code or vice versa. Hexadecimal code, also known as "hex" code, is a way of representing data using a base-16 numbering system. This means that instead of using the digits 0 through 9, as we do in the decimal (base-10) system, hex code uses the digits 0 through 9 and the letters A through F. For example, the hex code for the number 10 is A, the code for 11 is B, and so on. Hex code is often used in computing because its a convenient way to represent binary data. Binary code uses only two digits (0 and 1), and each group of four binary digits corresponds to a single hexadecimal digit. A hex converter can be a useful tool if you need to convert text or numbers into hex code or if you have some hex code that you need to convert back into text or numbers. There are many hex converters available online and as standalone software programs. Some text editors, such as Notepad on Windows, also have the ability to convert text to and from hex code.