In mathematics and computing,

**hexadecimal**(also base 16, or**hex**) is a positional numeral system with a radix, or base, of 16. It uses sixteen distinct symbols, most often the symbols 0–9 to represent values zero to nine, and A–**F**(or alternatively a–**f**) to represent values ten to fifteen.Also asked, what is the hex number?

The

**hexadecimal numbers**are 0-9 and then use the letters A-F. We show the equivalence of binary, decimal, and**hexadecimal numbers**in the table below.**Hexadecimal**is a convenient way to express binary**numbers**in modern computers in which a byte is almost always defined as containing eight binary digits.Why do we use hexadecimal numbers?

The

**hexadecimal**system is commonly used by programmers to describe locations in memory because it can represent every byte (i.e., eight bits) as two consecutive**hexadecimal**digits instead of the eight digits that would be required by binary (i.e., base 2) numbers and the three digits that would be required with decimalHow do you convert decimal to hexadecimal?

**Steps:**

- Divide the decimal number by 16. Treat the division as an integer division.
- Write down the remainder (in hexadecimal).
- Divide the result again by 16. Treat the division as an integer division.
- Repeat step 2 and 3 until result is 0.
- The hex value is the digit sequence of the remainders from the last to first.