ASCII (American Standard Code for Information Interchange) maps characters to numbers 0-127. Printable characters are 32-126. Examples: A=65, a=97, 0=48, space=32, newline=10. Extended ASCII uses 128-255 for additional characters. Now largely superseded by Unicode.

What is the difference between ASCII and Unicode?

ASCII has 128 characters (English only). Unicode supports 149,000+ characters including all languages, emoji, and symbols. Unicode's first 128 characters match ASCII. UTF-8 encoding uses 1-4 bytes per character, with ASCII characters using 1 byte.

How do I find the ASCII code of a character?

In JavaScript: "A".charCodeAt(0) = 65. In Python: ord("A") = 65. Reverse (code to character): String.fromCharCode(65) = "A" or chr(65). Uppercase letters: 65-90. Lowercase: 97-122. Digits: 48-57.

What are ASCII control characters?

ASCII 0-31 are non-printable control characters. Common ones: 0 = null, 9 = tab, 10 = line feed (\n), 13 = carriage return (\r), 27 = escape. Originally for teletypes and printers. Many still used: Ctrl+C (3), Ctrl+Z (26), backspace (8).

ASCII art creates images using printable ASCII characters. Uses character density/shape to create shading and form. Popular in early computing, email signatures, code comments. Still used in terminal applications and as a stylistic choice in modern design.

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ASCII Converter

ASCII maps characters to numbers 0-127. A=65, a=97, 0=48, space=32. Uppercase letters: 65-90. Lowercase: 97-122. Digits: 48-57. Unicode extends ASCII to support 149,000+ characters including emoji.

Convert text to ASCII codes and ASCII codes to text. Interactive ASCII table with all 128 characters.

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ASCII Table Overview

Range	Category	Examples
0-31	Control Characters	\n (10), \t (9), \r (13)
32-47	Punctuation/Symbols	Space (32), ! (33), " (34)
48-57	Digits	0 (48), 9 (57)
58-64	Punctuation	: (58), @ (64)
65-90	Uppercase Letters	A (65), Z (90)
91-96	Punctuation	[ (91), ` (96)
97-122	Lowercase Letters	a (97), z (122)
123-127	Punctuation/DEL	{ (123), DEL (127)

Printable ASCII Characters (32-126)

How to Use

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Frequently Asked Questions

What is ASCII?: ASCII (American Standard Code for Information Interchange) maps characters to numbers 0-127. Printable characters are 32-126. Examples: A=65, a=97, 0=48, space=32, newline=10. Extended ASCII uses 128-255 for additional characters. Now largely superseded by Unicode.
What is the difference between ASCII and Unicode?: ASCII has 128 characters (English only). Unicode supports 149,000+ characters including all languages, emoji, and symbols. Unicode's first 128 characters match ASCII. UTF-8 encoding uses 1-4 bytes per character, with ASCII characters using 1 byte.
How do I find the ASCII code of a character?: In JavaScript: "A".charCodeAt(0) = 65. In Python: ord("A") = 65. Reverse (code to character): String.fromCharCode(65) = "A" or chr(65). Uppercase letters: 65-90. Lowercase: 97-122. Digits: 48-57.
What are ASCII control characters?: ASCII 0-31 are non-printable control characters. Common ones: 0 = null, 9 = tab, 10 = line feed (\n), 13 = carriage return (\r), 27 = escape. Originally for teletypes and printers. Many still used: Ctrl+C (3), Ctrl+Z (26), backspace (8).
What is ASCII art?: ASCII art creates images using printable ASCII characters. Uses character density/shape to create shading and form. Popular in early computing, email signatures, code comments. Still used in terminal applications and as a stylistic choice in modern design.