The JSON to TypeScript converter generates TypeScript interfaces and type definitions from your JSON data. It infers types from sample values so you get ready-to-use types for your codebase.

It’s useful for API integration, config typing, and keeping TypeScript in sync with JSON structures without manual typing.

How to Use the JSON to TypeScript Converter

Convert JSON to TypeScript in a few steps:

Step 1:Paste or upload JSON:

Enter your JSON object in the input area or upload a JSON file.

Step 2:Configure options:

Choose root type name, optional nullability, and array vs tuple preference if available.

Step 3:Generate TypeScript:

Click Generate to get TypeScript interfaces. Copy the output into your project.

Step 4:Copy or download:

Copy the generated types or download as a .ts file for use in your codebase.

How It’s Used

Common use cases:

API integrationGenerate types from API response samples for type-safe fetch or axios calls.
Config typingCreate TypeScript types from config JSON for environment or app settings.
DocumentationDocument data structures by turning JSON examples into type definitions.

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