ASCII table

ASCII is a standard for character encoding used by computers and communications equipment to represent text. ASCII is short for American Standard Code for Information Interchange. You can find the ASCII table below.

Computers can only understand numbers, so a code ASCII is the numerical representation of a character such as M or 8 or $ or an action of some sort. ASCII uses a single byte to represent each character. A byte is generally the smallest addressable unit of data on a computer. It is a continuous sequence of eight bits, that is zeros or ones.

This means that one byte could represent any of 256 characters ranging in binary notation from 00000000 to 11111111. Eight bits allows 256 combinations of zeros and ones.

ASCII table

This following ASCII table lists the ASCII characters and their decimal, octal and hexadecimal numbers.

Below you can find the 128 standard character encodings in US-ASCII, which is the original and most basic version of ASCII. Each of these numbers in the ASCII table is a seven digit binary number between 00000000 and 01111111. The eighth bit (the left-most bit) was originally reserved for use as a parity bit.

The first 32 ASCII codes in the ASCII table below (zero through 31 in decimal notation, or 00000000 through 00011111 in binary) are reserved and are called control characters. These are non-printing ASCII characters. They were originally intended to control devices, most importantly printers. These characters appear in the most left column. The ASCII non-printing characters are rarely used for their original purpose these days.

Note that lower and upper case characters are understood by the computer differently.

Tools related to the ASCII table

ASCII to hex converter
Dec to hex converter
Hex to decimal converter

We suggest you also take a look at our another article and detailed explanation of code ASCII.

In case you have any questions about ASCII table, feel free to visit our discussion forum.