JSON to GraphQL Converter
Generate GraphQL type definitions from JSON
JSON to GraphQL Converter is a free online tool from BrowserUtils that generate graphql type definitions from json. It runs entirely in your browser — your data never leaves your device. No account required.
How to use JSON to GraphQL Converter
- 1 Paste or type your input into the editor above.
- 2 The tool processes your data instantly — right in your browser, with nothing sent to a server.
- 3 Copy the result with one click or continue editing your input.
About JSON to GraphQL Converter
Free online JSON to GraphQL converter. Automatically generate GraphQL type definitions from JSON data structures. This tool runs entirely in your browser — your data is never sent to a server. Just paste your input, get instant results, and copy with one click. No sign-up or installation required.
JSON to GraphQL Converter specs
- Runtime
- 100% client-side (browser)
- Cost
- Free — no account, no rate limits, no usage caps
- Browser support
- Chrome 90+, Firefox 88+, Safari 14+, Edge 90+
- Part of
- 299 developer tools on BrowserUtils (100% client-side)
Questions
How do I generate GraphQL types from JSON?
Paste your JSON data into the input field and the tool will infer types and produce GraphQL type definitions. Nested objects become separate named types with proper field references.
What GraphQL types does the converter produce?
The converter maps JSON strings to String, integers to Int, decimals to Float, booleans to Boolean, and arrays to list types like [String]. Nested objects become their own named GraphQL types.
Is the JSON to GraphQL converter safe for sensitive data?
Yes, all conversion happens in your browser. No JSON is sent to any server, so you can safely paste production API responses.
Can I use the generated GraphQL types in my schema directly?
Yes, the output is valid GraphQL SDL (Schema Definition Language) that you can paste into your .graphql schema files. You may want to adjust nullability and add custom scalars as needed.
How does the converter handle arrays of mixed types?
If an array contains objects with the same structure, the tool generates a single named type for the array elements. Mixed primitive types default to a generic scalar.
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