Convert JSON objects to TypeScript interfaces instantly with customizable options and clean code generation
Transform JSON data into clean, well-typed TypeScript interfaces instantly. Our free online converter helps developers, API designers, and TypeScript enthusiasts generate accurate type definitions with support for nested objects, arrays, and customizable options. Perfect for API integration, data modeling, and maintaining type safety in TypeScript projects.
Real-time TypeScript interface generation
All processing happens in your browser
Accurate type inference from JSON data
Converting JSON to TypeScript interfaces is the process of analyzing JSON data structure and generating corresponding TypeScript type definitions. This process ensures type safety, better IDE support, and improved code maintainability in TypeScript projects.
Our tool automatically detects data types from JSON values, handles nested objects and arrays, and generates clean, readable TypeScript interfaces that you can immediately use in your projects. With customizable options for optional properties, readonly modifiers, and naming conventions, you get exactly the interfaces you need.
The tool parses your JSON input and analyzes the structure, identifying data types, nested objects, and array patterns to understand the complete data schema.
Each JSON value is mapped to its corresponding TypeScript type: strings to string, numbers to number, booleans to boolean, arrays to typed arrays, and objects to interfaces.
The tool generates clean TypeScript interfaces with proper naming conventions, handling nested structures and creating separate interfaces for complex objects.
Apply your preferred options like optional properties, readonly modifiers, export statements, and naming conventions to match your coding standards.
Catch type errors at compile time instead of runtime, preventing bugs and improving code reliability.
Get autocomplete, IntelliSense, and refactoring tools that understand your data structure.
Interfaces serve as living documentation for your data structures and API contracts.
Shared type definitions ensure consistent data handling across team members and projects.
Convert API response examples to TypeScript interfaces for type-safe API client development and better integration with REST APIs, GraphQL, and microservices.
Model complex data structures from JSON samples, creating consistent type definitions for databases, data processing pipelines, and state management.
Convert existing JavaScript projects to TypeScript by generating interfaces from configuration files, API responses, and data structures.
Create type-safe mock data and test fixtures by converting sample JSON data to TypeScript interfaces for unit tests and integration tests.
Start generating TypeScript interfaces from your JSON data today and improve your development workflow.
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