🔗 URL Encode / Decode
Spaces, question marks and non-English characters are not allowed raw inside a URL — they must be percent-encoded, like %20 for a space. Choose Encode to convert text, or Decode to turn %20-style sequences back into readable characters.
The tool runs fully in your browser, so links and query strings stay private on your own device.
How to use this calculator
Paste text into the box, choose Encode or Decode, and the result appears instantly. Encoding makes text safe for URLs; decoding restores the readable form.
- Paste or type your text into the Text box.
- Choose Encode URL or Decode URL.
- Copy the result from the output area.
- For decoding, the input must be a valid encoded string or you will get an error message.
Frequently asked questions
What does this URL tool do?
In Encode mode it percent-encodes text so it is safe inside URLs, turning spaces into %20 and symbols like ? into %3F. In Decode mode it converts those sequences back into readable characters.
When would I need URL encoding?
Whenever text goes into a link, a query string, or a form submitted to a server. Raw spaces and characters like & or # would break the URL or change its meaning.
Can you give a worked example?
Encoding hello world? gives hello%20world%3F. Decoding that string returns hello world? exactly.
Is my text uploaded anywhere?
No. The conversion uses built-in browser functions and runs entirely on your device, so pasted text never leaves your browser.