Convert tools

JSON to Query String

Build URL query parameters from a JSON object, including repeated array values.

Convert in your browser · No sign-up

Only scalars and arrays of scalars are supported. Null becomes an empty value, spaces become +, and nested objects are rejected.

Up to 100,000 UTF-16 units per input and 1,000,000 per result. See the supported formats and examples below.

How to use

  1. Build URL query parameters from a JSON object, including repeated array values.
  2. Choose the mode or options, then run the tool.
  3. Review the result, then copy or download the TXT file.

Example

{"tag":["a","b"]} → tag=a&tag=b

Details and limitations

Only scalars and arrays of scalars are supported. Null becomes an empty value, spaces become +, and nested objects are rejected.

Text stays in your browser; it is not sent to a conversion server.

FAQ

JSON to Query String — What are the supported inputs and limits?

Only scalars and arrays of scalars are supported. Null becomes an empty value, spaces become +, and nested objects are rejected.

Format references

Tool page updated: