Kysely to SQL DDL Converter

Convert Kysely TypeScript database interfaces into executable SQL CREATE TABLE statements for PostgreSQL, MySQL, and SQLite.

At a glance

Kysely to SQL DDL Converter is a free developer utility that transforms TypeScript Kysely database interfaces into relational SQL CREATE TABLE statements. It unwraps Generated<T> and ColumnType<T> decorators into PostgreSQL, MySQL, and SQLite DDL 100% client-side in browser memory.

Universal Switcher:
From:
To:
Developer Suite: Kysely to SQL SQL to Kysely TypeORM to SQL SQL to TypeORM Drizzle to SQL SQL to Drizzle Zod to SQL SQL to Zod Prisma to SQL SQL to Prisma SQL to Knex.js SQL Formatter

100% Client-Side Kysely to SQL DDL Converter

Zero Server Uploads

Convert TypeScript Kysely database and table interfaces into clean, relational SQL CREATE TABLE statements (PostgreSQL, MySQL, SQLite, ANSI) directly in browser memory.

Local Sandbox
Presets:
0 chars
Speed: < 1 ms

Why Use This Kysely to SQL DDL Converter?

100% Client-Side Privacy: Your TypeScript interface definitions never leave your browser.
Multi-Dialect DDL Generation: Outputs tailored SQL CREATE TABLE queries for PostgreSQL, MySQL, SQLite, and ANSI SQL.
Unwraps Kysely Types: Automatically parses Generated<T> and ColumnType<Select, Insert, Update> constructs.
Multi-Table & Database Interface Parsing: Automatically maps table names from the Database interface.

How to Use Kysely to SQL DDL Converter

1

Input Kysely Interfaces

Paste your TypeScript Kysely table and database interfaces into the editor.

2

Select SQL Dialect

Choose your target relational database dialect (PostgreSQL, MySQL, SQLite, or ANSI SQL).

3

Copy SQL DDL

Copy or download the generated SQL CREATE TABLE DDL statements immediately.

Kysely to SQL Conversion example

Demonstrates converting a TypeScript Kysely table interface into a clean PostgreSQL CREATE TABLE statement.

Kysely TypeScript Interface Source 
export interface UsersTable {
  id: Generated<number>;
  name: string;
  created_at: ColumnType<Date, string | undefined, never>;
}
Generated SQL DDL Processed 
CREATE TABLE users (
  id SERIAL PRIMARY KEY,
  name VARCHAR(255) NOT NULL,
  created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP NOT NULL
);

Technical Specifications & Engine Details

Technical specifications and engine details for Kysely to SQL DDL Converter
Specification Details
Supported Formats TYPESCRIPT, TEXT → SQL, TEXT
Execution Mode 100% Client-Side In-Browser (client)
Browser Requirements Modern browser with JavaScript enabled.
Performance Constraints Runs 100% client-side in browser memory. Performance and interface sizes are bounded only by available device RAM.
Maintained by Pragyan Pahadi

100% Client-Side Privacy Guarantee

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

Frequently Asked Questions

Does Kysely to SQL DDL Converter require a backend server?
No. The parser runs 100% in-browser using static TypeScript interface analysis with zero network requests.
How are Generated<T> columns converted?
Generated<number> columns are converted into SERIAL / AUTO_INCREMENT primary keys, while Generated<string> columns are converted into UUID primary keys with default generator expressions.
Is this tool completely free and private?
Yes. It is completely free with no usage limits and zero server logging.

Methodology

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

Last updated .

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