JSON to TypeORM

Generate TypeORM entity from JSON.

This tool is designed to provide a seamless experience for developers by handling complex operations directly in your browser with maximum speed and security.

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Instant Results

Customizable

Offline Ready

Dev-Friendly

Easy Export

This tool transforms JSON structures into TypeORM entities. It identifies data types and applies the corresponding decorators, handling basic types as well as nested objects (which can be mapped to JSON columns or separate entities depending on your preference).

Input your JSON data, and the tool will generate a TypeScript class decorated with TypeORM entity decorators (@Entity, @PrimaryGeneratedColumn, @Column). It maps JSON fields to appropriate database column types.

TypeORM entities require specific decorators and type annotations. This tool automates the boilerplate code generation, allowing you to quickly move from a JSON data sample to a functional database model in your TypeScript project.

Example Input

{
  "id": 1,
  "name": "John Doe",
  "email": "john@example.com",
  "isActive": true,
  "tags": ["admin", "dev"],
  "profile": {
    "bio": "Software Engineer",
    "skills": ["Go", "React", "TypeScript"]
  }
}

Example Output

@Entity()
export class User {
  @PrimaryGeneratedColumn()
  id: number;

  @Column()
  name: string;

  @Column()
  email: string;

  @Column()
  isActive: boolean;

  @Column("simple-array")
  tags: string[];
}

Missing Primary Key

Fix: The tool defaults "id" to a primary key. If your JSON uses a different field, manually update the decorator.

Does it support relations?

Currently, it maps nested objects as simple columns. You can manually convert these to @OneToMany or @ManyToOne relations.

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