JSON to TypeScript
Convert JSON objects to TypeScript interfaces automatically. Nested objects become named interfaces.
Runs locally — nothing is uploaded
How to use
- 1
Paste JSON
Enter a JSON object or array.
- 2
Set root name
Name the top-level TypeScript interface.
- 3
Convert and copy
Generate nested interfaces and copy the TypeScript.
Frequently Asked Questions
Each nested object becomes a named interface derived from its key.
Homogeneous arrays use element types; object arrays get dedicated interfaces.
Yes. Set the root name field before clicking Convert.
An error message appears and no TypeScript is generated until the JSON parses.
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