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Query String Builder

Build URL query strings from key/value pairs.

Query parameters

Built URL
https://example.com/path?q=search%20term&page=1

47 characters

URL-encodes keys and values. Spaces become %20, special characters get encoded too. Useful for hand-building API calls or tracking links.

About

Type a base URL and add key/value pairs. The tool URL-encodes them and joins with the right separator. Adds to existing query string if the base URL already has one.

How to use

  1. Type the base URL.
  2. Add params.

FAQ

Will it encode special characters?+

Yes - both keys and values use encodeURIComponent. Spaces become %20, ampersands become %26, etc.