SQL Input
This free online SQLite to TypeScript Interfaces generator turns your CREATE TABLE DDL statements into ready-to-use TypeScript Interfaces instantly — with no server upload, no account, and no rate limits. Simply paste your SQLite schema on the left and the generated TypeScript Interfaces code appears on the right in real time. All processing runs entirely in your browser using client-side JavaScript, keeping your database schema 100% private.
Code & Data Generator
Complete type mapping from SQLite SQL column types to TypeScript Interfaces — including nullability, constraints, and gotchas.
| SQLite Type | TypeScript Interfaces Type | Notes |
|---|---|---|
| INTEGER PRIMARY KEY | number | SQLite rowid alias; auto-increments |
| INTEGER | number | SQLite stores all integers as 1–8 byte signed int |
| REAL | number | 8-byte IEEE floating point |
| TEXT | string | UTF-8 or UTF-16; unlimited length |
| BLOB | Uint8Array | Binary data; Buffer in Node.js |
| NUMERIC affinity | number | SQLite coerces to INTEGER or REAL |
| BOOLEAN (stored as INTEGER) | boolean | SQLite stores 0/1; cast in code |
| DATE / DATETIME (stored as TEXT) | string | SQLite has no date type; parse with new Date() |
| JSON (stored as TEXT) | Record<string, unknown> | Parse with JSON.parse(); no native JSON type |
| NULL column | field?: Type | SQLite allows NULL in any column by default |
Everything you need to know about converting SQLite to TypeScript Interfaces.
Paste your SQLite CREATE TABLE statements into the SQL editor on the left. The TypeScript Interfaces output appears instantly on the right panel in real-time as you type.
Yes — completely. The entire conversion runs inside your browser using JavaScript. Your SQL is never sent to any server, logged, or stored anywhere. This makes it safe to use with production or confidential database schemas.
PostgreSQL, MySQL, SQLite, SQL Server, Oracle, and MariaDB DDL syntax are all supported. The parser auto-detects the dialect from your CREATE TABLE syntax automatically.
Yes! Paste multiple CREATE TABLE statements separated by semicolons and all tables will be converted simultaneously, including cross-table foreign key relationships.
Yes. NULL, NOT NULL, DEFAULT values, PRIMARY KEY, UNIQUE, and FOREIGN KEY constraints are all parsed and reflected in the TypeScript Interfaces output. Nullable columns are correctly typed as optional properties or nullable types.
Yes, SchemaForge is completely free with no usage limits, no account required, and no rate limits. The tool runs entirely in your browser and will always be free.