Query String Generator

Hand-building name=Tom&age=20 is easy to get wrong. Paste JSON into this Query String Generator, or reverse a query string into an object.

What it is for

Build a query string from a JSON object, or parse query params back into JSON, without uploading the payload.

How to use

Paste a JSON object on the left and convert JSON → Query String.
Or paste name=Tom&age=20 on the right and convert Query String → JSON.
Copy the result into the URL Parser or API debugger if you need to keep going.

FAQ

Do keys need quotes?

Unquoted keys such as name:"Tom" are accepted. Conversion stays in the browser.

Is this URL encoding?

This page maps objects to query strings. Use URL encode/decode for percent-encoding only.

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