JSON to TypeScript
Convert JSON objects to TypeScript interfaces automatically
TypeScript interfaces will appear here...Processed entirely in your browser — files never leave your device
About this tool
Paste a JSON object and get a TypeScript interface generated automatically. Handles nested objects, arrays, optional fields, and union types. A huge time-saver for frontend developers.
- ·Auto-generates TypeScript interfaces from JSON
- ·Handles nested objects and arrays of objects
- ·Detects optional fields and union types
- ·Runs entirely in your browser — data never leaves your device
Frequently asked questions
Does it handle nested JSON?▼
Yes. Nested objects are converted into separate named interfaces, and arrays of objects get their own interface types.
Can it detect optional fields?▼
If you provide multiple JSON examples, it can infer which fields are optional. With a single sample, all fields are marked as required by default.
Does this work offline?▼
Yes. All conversion happens locally in your browser.
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