JSON to TypeScript, Zod, Python & Database Schema Converter
Generate Production-Ready Code from JSON Instantly. Convert JSON to TypeScript interfaces, Zod schemas, Python dataclasses, Go structs, Java POJOs, Kotlin data classes, PostgreSQL and MySQL schemas.
{
"name": "John Doe",
"email": "john@example.com",
"age": 30,
"is_active": true
}interface User {
name: string;
email: string;
age: number;
is_active: boolean;
}How It Works
Paste JSON
Copy your JSON data into the editor
Choose Output Format
Select TypeScript, Zod, Python, Go, Java, Kotlin, or database schema
Copy Production-Ready Code
Get instant, type-safe, validated output
Popular JSON Converters
Most used tools by developers worldwide
Common Use Cases
Real-world scenarios where ToolsVIA saves hours of development time
JSON to TypeScript, Zod and Schema Generators
Generate strongly typed schemas and API specifications from JSON
JSON to TypeScript
Generate TypeScript interfaces from JSON. Perfect for API integration and type safety.
JSON to Zod
Generate type-safe Zod schemas from JSON. Perfect for runtime validation in TypeScript projects.
JSON to GraphQL
Convert JSON to GraphQL schema definitions instantly. Generate types, input types, queries, and mutations for your GraphQL API.
JSON to OpenAPI
Convert JSON to OpenAPI 3.0/3.1 specifications instantly. Generate API documentation, client SDKs, and server stubs.
JSON to JSON Schema
Convert JSON to JSON Schema definitions instantly. Generate validation schemas for APIs, data models, and documentation.
JSON to Mongoose
Convert JSON to Mongoose schema with validation, indexes, virtuals, and middleware for Node.js MongoDB applications.
Convert JSON to PostgreSQL, MySQL and BigQuery Schema
Generate production-ready database DDL with proper data types, constraints, and indexes
JSON to MySQL
Convert JSON to MySQL CREATE TABLE statements and INSERT queries instantly. Perfect for database design and data migration.
JSON to PostgreSQL
Convert JSON to PostgreSQL CREATE TABLE statements with proper data types, constraints, indexes, and foreign keys.
JSON to BigQuery
Generate BigQuery table schemas and DDL from JSON data. Perfect for data engineers and analytics workflows.
Convert JSON to Python, Go, Java and Kotlin Code
Transform JSON into production-ready classes, structs, and data models
JSON to Go
Convert JSON to Go struct definitions instantly. Perfect for API integration and data modeling in Go applications.
JSON to Python
Convert JSON to Python dataclasses with type hints instantly. Perfect for API integration and data modeling in Python applications.
JSON to Java
Convert JSON to Java POJO classes with getters, setters, and annotations. Support for Jackson, Gson, and Lombok.
JSON to Kotlin
Convert JSON to Kotlin data classes with null safety, default values, and serialization annotations.
Data Format Converters
Convert JSON between different data formats
Why Developers Use ToolsVIA
Instant conversion with zero latency.
Everything runs in your browser. No server storage.
Designed for real-world API and backend workflows.
No login. No subscription. No limits.
Minimal, fast, distraction-free interface.
Desktop, mobile, tablet — fully responsive.
Learn and Master JSON Conversion
Comprehensive guides to help you convert JSON like a pro
Frequently Asked Questions
Everything you need to know about converting JSON to code and database schemas
What is ToolsVIA and how does it work?
ToolsVIA is a free online developer toolkit that converts JSON data into production-ready code and database schemas. Simply paste your JSON, select your target format (TypeScript, Zod, Python, Go, Java, Kotlin, PostgreSQL, MySQL, etc.), and get instant, type-safe output. All conversions happen in your browser — no data is ever sent to our servers.
Is ToolsVIA really free? Are there any limits?
Yes, ToolsVIA is 100% free with no hidden costs, no subscription tiers, and no usage limits. You don't need to create an account or provide any personal information. We believe developer tools should be accessible to everyone.
How accurate is the JSON to TypeScript conversion?
Our JSON to TypeScript converter accurately maps JSON types to TypeScript interfaces including string, number, boolean, arrays, nested objects, and optional fields. It handles complex nested structures and follows TypeScript best practices for type definitions.
Can I generate database schemas from JSON?
Absolutely! Our database tools convert JSON to PostgreSQL, MySQL, and BigQuery CREATE TABLE statements with proper data types, constraints (NOT NULL, UNIQUE, CHECK), indexes, and foreign keys. Perfect for database design and data migration projects.
What programming languages and formats are supported?
We support TypeScript interfaces, Zod schemas, Python dataclasses, Go structs, Java POJOs, Kotlin data classes, GraphQL schemas, OpenAPI specifications, JSON Schema, MySQL DDL, PostgreSQL DDL, BigQuery schemas, YAML, and more. New tools are added regularly based on user feedback.
Is my JSON data secure? Do you store my data?
Your data never leaves your browser. All conversions happen locally using JavaScript. We don't have any servers that receive or store your JSON data. You can even disconnect from the internet after loading the page — the converter will still work.
How do I convert JSON to Python dataclass?
Simply paste your JSON into the editor, select "JSON to Python" from the tools, and click convert. Our generator creates Python dataclasses with proper type hints, default values, and nested class support for complex JSON structures.
Can I use the generated code in production?
Yes! All generated code follows language-specific best practices and is production-ready. Thousands of developers use our converters for real-world API integrations, database designs, and application development.