JSON to TypeScript - Free Online Tool
Convert JSON to TypeScript interfaces or types instantly for free. Handles nested objects, arrays, optional fields. Copy generated code with one click.
Convert JSON to TypeScript interfaces or types automatically — handles nested objects and arrays
JSON to TypeScript Features
- Auto Generation: Paste JSON and get TypeScript interfaces or types instantly
- Nested Objects: Each nested object gets its own named interface
- Configurable: Toggle between interface/type, optional fields, custom root name
- Syntax Highlighted: Color-coded output with one-click copy to clipboard
How to Use JSON to TypeScript
Generate TypeScript from JSON in three steps
- Step 1: Paste JSON — Paste your JSON in the left panel
- Step 2: Configure — Choose interface vs type, set root name
- Step 3: Copy TypeScript — Copy the generated code to your project
Frequently Asked Questions about JSON to TypeScript
Does it handle nested objects?
Yes, each nested object gets its own named interface. Arrays are typed by their contents.
Can I use 'type' instead of 'interface'?
Yes, toggle between 'interface' and 'type' keyword with one click.
Does it handle optional fields?
Yes, toggle 'all optional' to add ? to every field.
Is this free?
Yes, runs entirely in your browser. No data sent to any server.
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