Query String <-> JSON Converter

Converts a URL query string to a JSON object and back. Works in your browser — nothing is sent to our servers.

Repeated keys (a=1&a=2) and array-style keys (a[]=1&a[]=2) become a JSON array. Going the other way, only flat values and arrays of flat values are supported — nested objects aren't (query strings don't have a single standard way to represent them).

Query string

JSON