ASCII Table

How to read an ASCII table

ASCII assigns a number to every basic character your keyboard can type. Programmers meet these numbers constantly — in URLs (%20 is ASCII 32, the space), in HTML entities, and in code that converts between characters and numbers.

1. Find a code three ways. Type a decimal number (65), a hex code (0x41), a character (A), or a name (bell) into the search box.
2. Filter by group. Codes 0–31 and 127 are control characters — invisible instructions like line feed and escape. Codes 32–126 are printable — letters, digits, and punctuation you can see.
3. Copy what you need. Click a row to copy its character; use the code button to copy its decimal and hex codes for your code.

Decimal, hex, and HTML entities

The same character has three common numeric forms: decimal (A = 65), hexadecimal (A = 0x41), and the HTML entity (A renders as A in a web page). Five characters have named entities you have probably seen — < for <, > for >, & for &, " for ", and ' for ' — because they would otherwise be read as HTML markup.

What is ASCII?

The American Standard Code for Information Interchange: a 7-bit encoding that assigns the numbers 0–127 to letters, digits, punctuation, and control characters. Every modern text encoding, including UTF-8, keeps ASCII's first 128 codes identical.

What are control characters?

Codes 0–31 plus 127: non-printing instructions inherited from teletype machines, like NUL (null), BEL (bell), TAB (horizontal tab), LF (line feed), and DEL (delete).

How do I convert a decimal code to hex?

Each ASCII code's hexadecimal value is shown beside it in the table. A is 65 in decimal and 41 in hex. Programmers often write hex codes with a 0x prefix, like 0x41.

What is an HTML entity?

A code that displays a character in a web page: &#65; renders as A. Named entities exist for special characters — &lt; for <, &gt; for >, &amp; for & — and every character also has a numeric form: &# followed by its decimal code.

What is the difference between ASCII and Unicode?

ASCII covers 128 characters; Unicode covers over 149,000 and includes ASCII's first 128 codes unchanged. See the Unicode Lookup tool for the wider set.

Can I copy a character by clicking it?

Yes — click any row to copy its character, or use the code button on a row to copy its decimal and hexadecimal codes. For control characters, the click copies the standard abbreviation (like NUL), since the code itself is not printable.