Percent Encoding Table
Look up URL percent-encoding for any character.
Percent-encoding, decoded
URLs can only contain a limited set of characters, so the rest are percent-encoded: a space becomes %20 and an ampersand %26. This table maps characters to their encoded form and back.
It is the quick reference for debugging a broken URL — spotting that a space, plus sign, or ampersand in a query parameter was not encoded and is silently truncating the link.
Where it matters
Query parameters and path segments have slightly different rules, a common source of broken links. The lookup runs on your device with nothing uploaded.
Frequently Asked Questions
How does the percent encoding table work?
The table uses encodeURIComponent rules to show how reserved URL characters become percent escapes. A space becomes %20 and ampersand becomes %26 inside a parameter value.
When should I use this tool?
Use it for query strings, redirect rules, UTM parameters, API URLs, and debugging links with special characters.
What is the main limitation?
Encode full URLs and individual parameter values differently; this tool focuses on component encoding.
Is this converter private?
Yes. It runs entirely in your browser, so your values are not uploaded or stored.
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