Bidirectional converter between JSON objects and URL query strings with nested parameter support
Format Converter
About This Tool
Bidirectional converter between JSON objects and URL query strings with nested parameter support. Toggle between JSON → Query String and Query String → JSON modes seamlessly.
Key Features
- Bidirectional conversion between JSON and URL query strings
- Nested object support with bracket notation
- Array support with index-based brackets
- Proper URL encoding/decoding
- Type parsing for numbers and booleans
- Copy output with one click
Use Cases
- Build and parse URL query parameters from API requests
- Convert between REST API parameters and JSON payloads
- Debug and test URL query strings
- Transform form data between formats
- Generate query strings for API integration testing
json
query-string
url
conversion
api
Frequently Asked Questions
What is the JSON ⟷ Query String Converter?
The JSON ⟷ Query String Converter is a bidirectional Format Converter that converts between JSON objects and URL query strings with nested parameter support. It runs entirely in your browser with no data sent to any server.
Does it support nested objects?
Yes, nested objects are converted using bracket notation (e.g., user[name]=John&user[age]=30). Arrays are also supported with index-based brackets (e.g., tags[0]=dev).
Is the JSON ⟷ Query String Converter free to use?
Yes, the JSON ⟷ Query String Converter is completely free to use. There are no hidden charges, subscriptions, or limitations. All features are available to everyone.
Is my data safe when using this tool?
Absolutely. All processing happens locally in your browser. No data is uploaded to any server, ensuring your information remains completely private and secure.
Can I use the JSON ⟷ Query String Converter on my phone?
Yes, the JSON ⟷ Query String Converter is fully responsive and works on all devices including smartphones, tablets, and desktop computers.