The best free online ASCII tools convert characters to their codes, switch between encodings, and turn text into things like Morse code or an ASCII table, all in your browser. All Tools Verse has a full set of free ASCII tools that run client-side with no sign-up and nothing uploaded. This guide picks the best free tool for each task, from an ASCII to decimal lookup to an ASCII art image.
In this guide
ASCII codes: decimal, hex and octal
Every character has an ASCII number. ASCII to Decimal and Decimal to ASCII convert both ways, with ASCII to Hex, Hex to ASCII, ASCII to Octal, and Binary to ASCII for the other bases.
Encodings: UTF-8, HTML and base64
To move ASCII between formats, ASCII to UTF-8 Bytes and UTF-8 to ASCII handle bytes, ASCII to HTML Entities and HTML Entities to ASCII handle the web, and ASCII to Base64 with Base64 to ASCII encode and decode. You can also make a Data URI from text.
Case and cleanup
To fix capitalization, ASCII Case Converter switches case, and to Uppercase and to Lowercase force one way. Validate ASCII checks that text is plain ASCII with no stray characters.
Reference and fun
For reference and play, Draw ASCII Table shows the full chart, ASCII to Morse Code and Morse to ASCII translate signals, ASCII to Image renders ASCII art as a picture, and Generate Random ASCII makes test strings.
Trusted alternatives
Any programming language can look up a character code with a single function, and an ASCII chart is printed in most reference docs. A code editor shows character codes too. For a single quick lookup or conversion, a focused browser tool is faster.
Popular free tools in this guide
Frequently asked questions
How do I find the ASCII code of a character?
Use ASCII to Decimal for the number, or ASCII to Hex for the hex code. Decimal to ASCII turns a code back into the character.
How do I convert ASCII to text?
If you have codes, use Decimal to ASCII or Hex to ASCII. For encoded data, Base64 to ASCII decodes it back to plain text.
Is there a full ASCII table?
Yes, Draw ASCII Table shows every character with its decimal, hex, and octal codes in one chart.
How do I convert text to Morse code?
Use ASCII to Morse Code to encode, and Morse to ASCII to decode, all in your browser.
Are these ASCII tools free and private?
Yes. Every tool is free with no account, and the text is processed on your device, so nothing is uploaded.
This guide is part of our roundup of the best free online tools.