How to Use ASCII Converter
Choose the conversion direction first. In text-to-ASCII mode, paste or type text and the converter prints each character code separated by spaces. In ASCII-to-text mode, enter decimal codes such as 72 101 108 108 111; spaces, commas, semicolons, and line breaks can separate the numbers. Codes must be whole numbers from 0 to 255 when decoding.
Formula & Theory - ASCII Converter
ASCII maps characters to numeric codes. The browser implementation uses JavaScript character-code functions: encoding reads each character code from the input string, while decoding turns decimal byte values back into characters. For plain ASCII text, codes 0-127 are the standard range; values 128-255 are treated as extended byte values by the browser character function.
code = text.charCodeAt(index)
character = String.fromCharCode(code)Use Cases for ASCII Converter
Use it to inspect protocol payloads, understand control characters, prepare decimal code tables, debug legacy text data, or convert simple examples for programming lessons. It is also handy when a device manual or network log gives decimal byte values instead of readable characters.