URL Encoder/Decoder
Encode and decode URL strings instantly for web development, query strings, and debugging.
URL Encoder/Decoder
This calculator auto-updates when values change.
About This URL Encoder/Decoder
This URL encoder and decoder converts reserved characters into URL-safe percent encoding and decodes encoded strings back to readable text.
It is useful when working with query strings, redirect URLs, API requests, and debugging copied links.
How to Use This Tool
- 1
Choose encode or decode
Select whether you want to make text URL-safe or read an encoded string.
- 2
Enter the URL text
Paste the full string, query value, or encoded segment.
- 3
Copy the output
Use the converted URL string in your request, link, or debugging workflow.
Frequently Asked Questions
What does URL encoding do?v
It replaces reserved or unsafe characters with percent-encoded values so they can travel safely in URLs.
Why does decoding fail?v
A malformed percent escape, such as a percent sign without two valid hex characters, can make decoding fail.
Should I encode a whole URL or a query value?v
Usually encode individual query values with encodeURIComponent, not an already complete URL.