TypeORM Entity to GraphQL Schema Generator

Convert TypeORM entity classes, decorators, and relations into production-ready GraphQL SDL with inverted nullability.

At a glance

TypeORM Entity to GraphQL Schema Generator is a free developer utility that transforms TypeORM TypeScript classes into GraphQL Schema Definition Language (SDL). It handles inverted nullability, maps decorators and relations to object types, and synthesizes root queries, mutations, and inputs 100% client-side in browser memory.

Universal Switcher:
From:
To:
Developer Suite: TypeORM to GraphQL TypeORM to Zod Drizzle to GraphQL Prisma to GraphQL SQL to GraphQL TypeORM to Prisma TypeORM to Drizzle

100% Client-Side TypeORM Entity to GraphQL SDL Generator

Zero Server Uploads

Transform TypeORM TypeScript entity classes, decorators, and relations into clean GraphQL SDL types, operations, and input objects.

Local Browser Sandbox
Presets:
0 chars
0 types
Entities & Types 0
Enums 0
Nullability Mode Inverted (Req → !)
Execution Engine 100% Client-Side

Why Use This TypeORM Entity to GraphQL Schema Generator?

100% Client-Side Privacy: Your entity code never leaves your device or touches any server.
Inverted Nullability Engine: Accurately converts TypeScript/TypeORM nullability to strict GraphQL ! SDL semantics.
Relation & Decorator Support: Maps @OneToMany, @ManyToOne, @OneToOne, and @ManyToMany relations into clean GraphQL graph fields.
CRUD Operations & Inputs: Automatically generates root Query, Mutation, and Create/Update input types.

How to Use TypeORM Entity to GraphQL Schema Generator

1

Input Entity Code

Paste your TypeScript TypeORM entity classes with decorators into the editor or upload a .ts file.

2

Configure Options

Toggle root queries, mutations, input types, and foreign key inclusion using the toolbar.

3

Copy or Download

Copy the generated GraphQL SDL or download it as schema.graphql.

TypeORM Entity to GraphQL Schema example

Converts a TypeORM User entity into GraphQL SDL with primary key ID!, non-null name, nullable bio, and root queries.

TypeORM TypeScript Entity Source 
@Entity('users')
export class User {
  @PrimaryGeneratedColumn('uuid')
  id: string;

  @Column()
  name: string;

  @Column({ nullable: true })
  bio?: string;
}
Generated GraphQL SDL Processed 
type User {
  id: ID!
  name: String!
  bio: String
}

type Query {
  users: [User!]!
  user(id: ID!): User
}

Technical Specifications & Engine Details

Technical specifications and engine details for TypeORM Entity to GraphQL Schema Generator
Specification Details
Supported Decorators @Entity, @Column, @PrimaryGeneratedColumn, @OneToMany, @ManyToOne, @OneToOne, @ManyToMany
Execution Mode 100% Client-Side In-Browser (Zero server latency)
Nullability Mapping Inverted (TypeORM required → GraphQL !, nullable → unadorned)
Generated Output GraphQL SDL (Types, Enums, Queries, Mutations, Inputs)
Maintained by Pragyan Pahadi

100% Client-Side Privacy Guarantee

Your files remain strictly on your local device. Zero data is transmitted to external servers.

Frequently Asked Questions

How does this tool handle TypeORM nullability in GraphQL?
In TypeORM, columns without nullable: true are required by default. In GraphQL SDL, required fields must be explicitly marked with an exclamation mark (!), while optional or nullable fields remain unadorned. This generator handles this inverted nullability automatically.
Which TypeORM relation decorators are supported?
The generator supports @OneToMany, @ManyToOne, @OneToOne, and @ManyToMany decorators. List relations are converted to non-null arrays like [Target!]!, while single relations map to Target! or Target based on nullability.
Does this tool run on a remote server?
No. All TypeScript entity parsing and GraphQL SDL generation execute 100% client-side inside your browser sandbox. No source code or schema data is transmitted over the network.
How are primary keys and auto-generated IDs handled?
Columns decorated with @PrimaryGeneratedColumn() or @PrimaryColumn() map to GraphQL ID! scalar types. In generated CreateInput objects, auto-generated primary keys and timestamp columns are automatically excluded.

Methodology

This tool runs entirely in your browser. The example above shows a representative input and the result it produces.

Last updated .

Recommended Next Steps in Developer Utilities

View All Developer Utilities →

TypeORM Entity to Zod Schema Generator

Convert TypeORM entity classes into Zod runtime validation schemas with dual select and insert modes, string format validation, and inferred TypeScript types. Free, private, in-browser.

TypeORM Entity to Zod Schema Generator →

Drizzle ORM Schema to GraphQL Schema Generator

Convert Drizzle ORM schemas into clean GraphQL SDL types, inputs, queries, and mutations online.

Drizzle to GraphQL Schema Generator →

Prisma Schema to GraphQL Schema Generator

Convert Prisma Schema models into clean GraphQL SDL types, queries, mutations, and inputs online.

Prisma Schema to GraphQL Schema Generator →

SQL DDL to GraphQL Schema Generator

Convert SQL CREATE TABLE statements into GraphQL SDL types, inputs, queries, and mutations online.

SQL DDL to GraphQL Schema Generator →

GraphQL Schema to TypeORM Entity Generator

Convert GraphQL Schema Definition Language (SDL) types, fields, enums, and relations into TypeScript TypeORM entity classes.

GraphQL Schema to TypeORM Entity Generator →

Kysely Interface to GraphQL Schema Generator

Convert Kysely TypeScript table interfaces, Generated<T>, and ColumnType definitions into GraphQL SDL types, queries, and mutations.

Kysely to GraphQL Schema Generator →