# Octal to HEX

There are a few reasons why someone might need to convert octal to hex. Octal is sometimes used as a shorthand for binary, since each digit in octal corresponds to three bits in binary. Octal is also used in Unix-based systems as a permission code - for example, the code "644" indicates that a file is readable by everyone, but can only be modified by the owner. Meanwhile, hexadecimal (or "hex") is often used as a way to represent color values in HTML or CSS. So, if you're working with colors on a website, you may need to convert an octal value to hex.

Fortunately, converting octal to hex is relatively simple. To do so, you just need to break the octal number down into groups of three digits, and then use the corresponding values from the hexadecimal system. For example, consider the octal number "2673". This can be broken down into two groups of three digits: "267" and "3". The first group, "267", corresponds to the hex value "9B7". The second group, "3", corresponds to the hex value "3". So, the overall hexadecimal equivalent of "2673" is "9B73".

Octal | Hex

------ | ---

000 | 0

001 | 1

002 | 2

003 | 3

004 | 4

005 | 5

006 | 6

007 | 7

010 | 8

011 | 9

012 | A

013 | B

014 | C

015 | D

016 | E

017 | F

020 | 10

021 | 11

Octal Hex Octal Hex Octal Hex Octal Hex

30 1E 100 64 200 C8 300 12C

31 1F 101 65 201 C9 310 12D

32 20 102 66 202 CA 320 12E

40 28 110 6C 210 D2 330 132

41 29 111 6D 211 D3 340 136

42 2A Octal numbers can go up to 377, or “FFF” in hexadecimal.

Octal | Hex

------ | ---

377 | 1FF

400 | 200

555 | 222

Octal numbers are used as a shorthand for binary values in computing and digital electronics. Octal is also used in Unix-based systems as a permission code. Meanwhile, hexadecimal is often used as a way to represent color values in HTML or CSS. So, if you're working with colors on a website, you may need to convert an octal value to hex.

To convert octal to hex, you just need to break the octal number down into groups of three digits, and then use the corresponding values from the hexadecimal system. Octal | Hex Octal numbers are used as a shorthand for binary values in computing and digital electronics. Octal is also used in Unix-based systems as a permission code. Meanwhile, hexadecimal is often used as a way to represent color values in HTML or CSS. So, if you're working with colors on a website, you may need to convert an octal value to hex.