ASCII Encode/Decode

Features

ASCII (American Standard Code for Information Interchange) is a character encoding standard commonly used in computers. It uses 7 bits to represent 128 characters, including English letters, digits, punctuation marks, and control characters.

Use Cases

Character to ASCII code conversion
Understanding computer low-level character representation
Debugging character encoding issues
Learning character encoding basics

How to Use

Enter characters or ASCII codes to convert
Choose character-to-code or code-to-character
Click the convert button
View the conversion result

ASCII Table (Printable Characters)

Range	Description
48-57	Digits 0-9
65-90	Uppercase letters A-Z
97-122	Lowercase letters a-z
33-47	Common punctuation
91-96	Brackets and symbols

Extended ASCII

Extended ASCII uses 8 bits (256 characters), including more European characters and graphic symbols.

Examples

Character: A
ASCII Code: 65

Character: hello
ASCII Code: 104 101 108 108 111

ASCII Code: 72 101 108 108 111
Characters: Hello

Notes

ASCII only contains English letters and basic symbols
Chinese, Japanese and other characters are not in ASCII range
Pay attention to encoding compatibility in string processing

ASCII Convert