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Text to Decimal (ASCII codes)
Convert text to decimal ASCII codes online: every character becomes its number, so "Hi" is 72 105. Type or paste your text and the codes appear as you type. Free, no sign-up, and your text never leaves your browser.
How to convert text to ASCII codes
- 1Type or paste your text into the input box
- 2Read the decimal codes in the result box
- 3Click "Copy" to take them with you
- One decimal code per character, separated by spaces.
What you get
- Nothing is uploaded.The conversion runs in your browser, so your text stays on your device.
- Updates as you type.The result follows every keystroke, with no button to press.
- Works offline.Once the tool has been opened, it needs no connection.
What you can do
- Show the number of every character in your text: "A" is 65, "a" is 97, a space is 32.
- Convert letters, digits, punctuation and line breaks. A line break shows as 10.
- Handle characters beyond ASCII too: each one gives its Unicode number, so "é" is 233 and a smiley is 128512.
- Turn the codes back into text with Decimal (ASCII codes) to Text.
Good to know
- The numbers are character codes, not bytes. Characters above 127 give their full Unicode number, not several UTF-8 bytes.
- Codes are separated by single spaces and written without leading zeros.
- For hex, binary or octal byte values, use the matching Text to Hex, Binary or Octal tools.
Questions
How do I convert text to ASCII codes?
Paste your text into the input box. The decimal code of each character appears in the result box. Click "Copy" to copy them.
What is the ASCII code of a letter?
Capital A to Z are 65 to 90, lower case a to z are 97 to 122. Digits 0 to 9 are 48 to 57.
What about characters like ä or an emoji?
They give their Unicode number, which can be larger than 255. This is not the same as their UTF-8 bytes.
Is my text uploaded?
No. Your browser does the conversion on your own device.