JSON to TypeScript
Convert JSON to TypeScript interfaces online. Auto-generate type definitions from JSON data.
How to Convert JSON to TypeScript
- 1 Paste your JSON data into the input area
- 2 Enter a name for the interface or type
- 3 Choose between interface or type syntax
- 4 Optionally make all properties optional
- 5 View and copy the generated TypeScript definitions
Frequently Asked Questions
Is my code or data stored anywhere? ▼
No. All developer tools process data locally in your browser. Nothing is sent to any server or logged.
Can I use these tools offline? ▼
Yes! After the initial page load, most developer tools work without an internet connection.
Are there API limits? ▼
No limits. Since processing happens in your browser, you can use the tools as much as you need.
Is the output compatible with production use? ▼
Yes. Our tools produce standard-compliant output suitable for production environments.
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Last updated: January 15, 2026 · v2.1