ASCII Converter
Convert text to ASCII codes and ASCII codes back to text.
ToolsSoup's ASCII Converter is a free online tool that turns any text into its ASCII (character code) numbers and converts a list of ASCII codes back into readable text, instantly and entirely in your browser. Paste a sentence to see the code behind every letter, or decode a string of numbers into words — with no uploads, no sign-up, and nothing ever leaving your device.
What is ASCII?
ASCII (American Standard Code for Information Interchange) is a character-encoding standard that assigns a number from 0 to 127 to letters, digits, punctuation, and control characters. For example, the capital letter A is 65, the lowercase a is 97, the digit 0 is 48, and a space is 32. Computers store and transmit text as these numbers, so converting between characters and ASCII codes is a quick way to inspect exactly what a string contains. This tool also supports code points above 127 so it works with extended and Unicode characters too.
How to convert text to ASCII online
Converting with ToolsSoup takes just a few seconds:
- Type or paste your text — or a list of ASCII codes — into the input box.
- Click Text to ASCII to turn each character into its numeric code, or ASCII to Text to turn codes back into characters.
- Copy the result with one click and paste it wherever you need it.
What format do the ASCII codes use?
When converting text to ASCII, each character becomes a decimal number and the codes are separated by spaces — for example, Hi becomes 72 105. When converting ASCII back to text, you can separate the codes with spaces, commas, or new lines; the tool ignores the extra whitespace and rebuilds the original string. Every code must be a whole number, so any non-numeric token is reported as an error.
Why use this ASCII converter?
- 100% free with no ads, sign-up, or usage limits.
- Runs entirely in your browser — your text is never uploaded to a server.
- Converts text to space-separated decimal ASCII codes and back again.
- Accepts codes separated by spaces, commas, or new lines when decoding.
- Works offline once the page has loaded.
Frequently asked questions
Is this ASCII converter free?
Yes. Every tool on ToolsSoup is completely free to use, with no account, sign-up, or hidden limits.
Is my data safe?
Absolutely. All conversion happens locally in your browser using JavaScript, so your text is never sent to or stored on any server.
What number format does it output?
Text to ASCII produces decimal character codes separated by single spaces, such as 72 101 108 108 111 for the word Hello. This is the most common and most portable way to write ASCII codes.
How should I separate codes when decoding?
When converting ASCII codes back to text you can separate the numbers with spaces, commas, or line breaks — for example 72 105 or 72,105 both decode to Hi. Any token that is not a whole number is reported as an invalid ASCII code.
Does it handle characters beyond standard ASCII?
Yes. Standard ASCII only covers codes 0 to 127, but this tool uses the full Unicode code point of each character, so accented letters, symbols, and emoji are converted to and from their numeric code points as well.