JSON to TypeScript Interface
Infer a TypeScript interface from a JSON object.
How to use JSON to TypeScript Interface
Infer a TypeScript interface from a JSON object.
TypeScript types are inferred from example values, not a complete JSON Schema.
- Open JSON to TypeScript Interface on Tools4U.
- Paste content, or import a supported text file.
- Select Convert and review the output.
- Copy the result or download the converted file.
Frequently asked questions
Is JSON to TypeScript Interface free?
Yes. Verified Tools4U accounts can use the converter for free. Premium members do not see advertisements.
Are my files stored?
The text is processed on a private worker and returned directly without saving generated files to disk. Do not upload sensitive information without permission.
What is the input limit?
600,000 characters, with a 1.8 MB output limit. Large spreadsheets and complex binary documents require dedicated Office/Image/PDF tools.