  # Hexadecimal vs. Octal — What's the Difference? ## Compare with Definitions

In mathematics and computing, the hexadecimal (also base 16 or hex) numeral system is a positional numeral system that represents numbers using a radix (base) of 16. Unlike the decimal system representing numbers using 10 symbols, hexadecimal uses 16 distinct symbols, most often the symbols "0"–"9" to represent values 0 to 9, and "A"–"F" (or alternatively "a"–"f") to represent values from 10 to 15.
Apr 09, 2022

#### Octal

The octal numeral system, or oct for short, is the base-8 number system, and uses the digits 0 to 7, that is to say 10 represents 8 in decimal and 100 represents 64 in decimal. However, English uses a base-10 number language system and so a true octal system might use different language to avoid confusion with the decimal system.
Apr 09, 2022

Of, relating to, or based on the number 16
Apr 09, 2022

#### Octal

Of, relating to, or based on the number eight
An octal number system.
Apr 09, 2022

Of or relating to sixteenths.
Apr 09, 2022

#### Octal

A number system having 8 as its base
16 in base 10 is represented in octal as 20.
Apr 09, 2022

A number system having 16 as its base.
Apr 09, 2022

#### Octal

The number system that uses the eight digits 0, 1, 2, 3, 4, 5, 6, 7.
Apr 09, 2022

A sixteenth.
Apr 09, 2022

#### Octal

A digit or value in the octal number system.
Apr 09, 2022

A number system with base sixteen, using the digits 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E and F, most used in computing as a hexadecimal digit can represent four bits, half a standard byte, and thus a single byte can be represented conveniently with two digits.
Apr 09, 2022

#### Octal

Concerning numbers expressed in octal or mathematical calculations performed using octal.
Apr 09, 2022

A number expressed in the hexadecimal system.
Apr 09, 2022

#### Octal

Of or pertaining to a number system having 8 as its base;
An octal digit
Apr 09, 2022

Of a number, expressed in hexadecimal.
Apr 09, 2022