JSON → Prisma
Schema Converter

About JSON to Prisma Schema Converter

This free online JSON to Prisma schema converter tool allows you to transform JSON data into ready-to-use Prisma ORM schemas and vice versa. Whether you're a developer prototyping database models, migrating from NoSQL to SQL, or converting existing data structures to Prisma format, our bidirectional converter intelligently infers types, generates model relations, adds appropriate decorators (@id, @default, @unique), and creates production-ready schema.prisma files. Everything runs 100% in your browser with no server uploads.

Why Convert Between JSON and Prisma Schema?

Prisma ORM is the modern database toolkit for TypeScript and Node.js, providing type-safe database access through schema.prisma files. Converting JSON to Prisma schemas accelerates development by transforming API responses, sample data, or existing JSON structures into proper database models instantly. This eliminates manual schema writing, reduces type definition errors, speeds up prototyping, and ensures consistency between data shapes and database schemas. Reverse conversion (Prisma to JSON) helps document database structures, generate API contracts, create mock data templates, and analyze schema relationships programmatically.

How to Use This Converter

Choose your conversion direction: JSON → Prisma mode analyzes JSON objects or arrays, infers field types (String, Int, Float, Boolean, DateTime), detects nested objects as related models, recognizes arrays as one-to-many relationships, and generates a complete Prisma schema with model definitions, decorators, and relations. Prisma → JSON mode parses schema.prisma files and extracts model structures into clean JSON format for documentation or analysis. Paste your data, click Generate Schema or Convert to JSON, and get instant results ready to use in your Prisma project or download as schema.prisma files.

Key Benefits

• No installation required: Works directly in your browser without any software downloads
• Completely free: No registration, credit card, or hidden fees
• Secure and private: All conversion happens locally - your data never reaches our servers
• Fast processing: Instant schema generation with no waiting time
• Bidirectional: Convert JSON ↔ Prisma schema with full roundtrip support
• Smart type inference: Automatically detects String, Int, Float, Boolean, DateTime types
• Relation detection: Identifies nested objects and arrays as model relationships
• Decorator generation: Adds @id, @default, @unique, @relation where appropriate

Common Use Cases

Developers use JSON to Prisma converters for rapid prototyping database schemas from API response examples, migrating from MongoDB or other NoSQL databases to SQL with Prisma ORM, generating Prisma models from existing JSON data structures or TypeScript interfaces, creating database schemas from GraphQL query results, converting sample data into proper Prisma models for testing, bootstrapping new projects with schema.prisma from JSON configs. Backend engineers use it to document API contracts by converting Prisma schemas to JSON, generate mock data templates from database models, analyze schema relationships programmatically, create data migration scripts, validate schema consistency across microservices. Full-stack developers prototype quickly, maintain type safety between frontend and backend, and keep schemas synchronized with data shapes.

Supported Prisma Features

JSON to Prisma conversion generates proper model definitions with field types (String, Int, Float, Boolean, DateTime, Json), detects required vs optional fields, adds @id decorators for primary keys, includes @default for default values (autoincrement, now, uuid), recognizes unique fields with @unique, infers one-to-many and many-to-many relationships from nested arrays, creates relation fields with @relation decorators, and handles enum definitions. Prisma to JSON parsing extracts model names, field definitions with types and modifiers, relationship mappings, decorator metadata, and preserves schema structure. Both directions support Prisma 4+ syntax and conventions.

Technical Features

The converter intelligently analyzes JSON structure and applies Prisma best practices: string fields become String type, numbers map to Int or Float based on decimals, booleans become Boolean, ISO date strings convert to DateTime with @default(now), null values mark fields as optional with ?, nested objects generate related models with proper @relation syntax, arrays indicate one-to-many relationships, and id/uuid fields automatically get @id decorator. The generated schema is ready to use with prisma migrate, prisma generate, and Prisma Client. Error messages help debug invalid JSON or Prisma syntax. Quick actions include copy, download (schema.prisma or .json), and swap for roundtrip testing.

Privacy and Security

Unlike online converters that upload your data to remote servers, this tool processes everything locally in your browser using JavaScript. Your database schemas, model definitions, API structures, user data examples, or any sensitive information never leave your computer, making it completely safe for converting production schemas and real data samples. No cookies, tracking, data storage, or server communication. Perfect for working with proprietary database structures, confidential API contracts, internal data models, or any sensitive schema information that requires privacy. Your Prisma configuration and database credentials remain secure.