Hexadecimal is a base 16 number system which uses the digits: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E and F. Hexadecimal is often referred to as “hex” for short.
Denary, Binary and Hexadecimal equivalent values
All number systems use the same rules for their place values. Each place value is based on the base to the power of the position.
$$ Base^5\quad Base^4\quad Base^3\quad Base^2\quad Base^1\quad Base^0 $$
There are an unlimited number of place values, but the first six place values are shown here.
$$ 10^5\quad10^4\quad10^3\quad10^2\quad10^1\quad10^0 $$
Which means that the first six place values used by the decimal number system are:
$$ 100,000s\quad10,000s\quad1,000s\quad100s\quad10s\quad1s $$
$$ 2^5\quad2^4\quad2^3\quad2^2\quad2^1\quad2^0 $$
Which means that the first six place values used in the binary number system are:
$$ 32\quad16\quad8\quad4\quad2\quad1\quad0 $$
$$ 16^5\quad16^4\quad16^3\quad16^2\quad16^1\quad16^0 $$
Which means that the first six place values used in the hexadecimal number system are: