ConvertUtility

Query String to JSON Converter

Convert URL query parameters into JSON instantly. Great for debugging and API work.

How to use

  1. Paste a query string (with or without leading '?').
  2. The tool parses parameters into JSON.
  3. Copy the JSON output.

FAQ

Does it decode URL-encoded values?

Yes — it decodes percent-encoded characters automatically.

What about repeated keys?

Repeated keys become arrays (e.g., a=1&a=2 → {a:["1","2"]}).

Is my data uploaded?

No — parsing runs locally in your browser.