ASCII Table
Look up any ASCII code from 0 to 127, plus the extended 128–255 range in Windows-1252 or ISO-8859-1, in decimal, hex, octal, binary and HTML. Search, click to copy, and convert text to codes, all in your browser.
| Dec | Hex | Oct | Binary | Char | HTML | Description |
|---|
No characters match your search.
Click a character to see all its codes, or click any value in the table to copy it.
Text to ASCII codes
How to use the ASCII Table
- Browse the standard 0–127 table, or switch to Extended 128–255 or All 0–255.
- Search by typing a character (A), a code (65, 0x41, 01000001), an entity (&) or a name such as tab or euro.
- Click a character to see every representation in the detail card, then click a value to copy it.
- Pick the extended set: Windows-1252 (what most Western Windows text uses) or ISO-8859-1 with C1 control codes.
- Convert text to ASCII codes in the panel below the table, or copy or download the table as CSV.
How ASCII codes are organized
ASCII is a 7-bit code, so every character fits in the values 0 to 127 (binary 0000000 to 1111111). The layout is not random: it is arranged in blocks of 32, which is why so many tricks work with a single bit.
| Range (dec) | Hex | Contents |
|---|---|---|
| 0–31 | 00–1F | Control characters (NUL, TAB, LF, CR, ESC…) |
| 32–47 | 20–2F | Space and punctuation: ! " # $ % & ' ( ) * + , - . / |
| 48–57 | 30–39 | Digits 0–9 (the digit's value is code − 48) |
| 58–64 | 3A–40 | : ; < = > ? @ |
| 65–90 | 41–5A | Uppercase letters A–Z |
| 91–96 | 5B–60 | [ \ ] ^ _ ` |
| 97–122 | 61–7A | Lowercase letters a–z |
| 123–126 | 7B–7E | { | } ~ |
| 127 | 7F | DEL (delete) control character |
Useful consequences: the case of a letter is bit 5 (value 32), so 'a' − 'A' = 32 and XOR with 0x20 toggles case. Holding Ctrl on a terminal clears bits 5 and 6, so Ctrl+M sends 13 (carriage return), Ctrl+I sends 9 (tab) and Ctrl+[ sends 27 (escape). That is where the caret notation in the table (^M, ^I, ^[) comes from.
Control characters you still meet today
- LF (10, \n) ends lines on Linux and macOS; CR LF (13 10, \r\n) ends lines on Windows and in HTTP and email headers. Mixing them causes the classic "^M" at line ends; the line ending converter fixes that.
- HT (9, \t) is the tab used in TSV files and Makefiles.
- ESC (27, \x1b) starts ANSI escape sequences such as
\x1b[31mfor red terminal text. - NUL (0, \0) terminates strings in C and is often a sign of binary or UTF-16 data when it shows up in text.
- BEL (7) beeps a terminal, BS (8) moves back one character, and DEL (127) was originally used to punch out mistakes on paper tape (all seven holes).
Windows-1252 vs ISO-8859-1
Both code pages agree with ASCII for 0–127 and with each other for 160–255, where you find é (233), ü (252), ñ (241), © (169) and the no-break space (160). They differ only in 128–159: ISO-8859-1 reserves it for rarely used C1 control codes, while Windows-1252 places 27 printable characters there, including € (128), … (133), ‘ ’ “ ” (145–148), • (149), – (150), — (151) and ™ (153); five codes (129, 141, 143, 144, 157) are unused. Because so much text labeled as Latin-1 was really written on Windows, the HTML standard tells browsers to decode ISO-8859-1 as Windows-1252. If you see “’” instead of an apostrophe, UTF-8 text was decoded as Windows-1252; the text encoding converter can repair such files.
Frequently asked questions
What is ASCII?
ASCII (American Standard Code for Information Interchange) is a 7-bit character encoding from 1963 that assigns the numbers 0 to 127 to 33 control characters and 95 printable characters: the space, digits, upper and lower case English letters and common punctuation. The first 128 code points of Unicode and UTF-8 are identical to ASCII.
What is the ASCII code for A, a, 0 and space?
Uppercase A is 65 (hex 41), lowercase a is 97 (hex 61), the digit 0 is 48 (hex 30) and the space is 32 (hex 20). Upper and lower case letters differ by exactly 32, which is a single bit (0x20).
What is extended ASCII?
There is no single extended ASCII. Codes 128 to 255 depend on the code page. ISO-8859-1 (Latin-1) puts C1 control codes at 128–159 and accented letters and symbols at 160–255. Windows-1252 uses the same 160–255 but puts printable characters such as €, curly quotes, the en dash and ™ at 128–159. This table lets you switch between both.
What are ASCII control characters?
Codes 0 to 31 and 127 are non-printing control characters that were designed to control teleprinters and data links. A few are still used every day: 9 (tab), 10 (line feed, new line on Linux and macOS), 13 (carriage return, CR LF on Windows), 27 (escape, used in terminal color codes) and 0 (null, the string terminator in C).
How do I write an ASCII character in HTML?
Use a numeric character reference: A or A for A. A few characters have named entities that you must use in text: & for &, < for < and > for >, and " inside attribute values. For Windows-1252 characters such as €, use the Unicode code point (€), not the code page number 128.
What is the difference between ASCII and UTF-8?
UTF-8 is a Unicode encoding that stores the 128 ASCII characters as the same single bytes, so plain ASCII text is already valid UTF-8. Characters above 127 take 2 to 4 bytes in UTF-8, unlike single-byte code pages such as Windows-1252.