JSON to TypeScript
JSON ToolsGenerate TypeScript interfaces from JSON data. Free, private — all processing in your browser.
How to use
- 1. Enter or paste your data in the input area above
- 2. Adjust settings or options as needed
- 3. Click the action button or see real-time results
- 4. Copy the result with the copy button
All processing happens in your browser. Nothing is sent to any server.
About this tool
Generate TypeScript interfaces from JSON data automatically. Paste a JSON object or array and get properly typed TypeScript interfaces with correct property types (string, number, boolean, null), nested object interfaces, array types, and optional fields. The tool handles complex nested structures, arrays of objects (generating separate interfaces for array items), and mixed types. Customize the root interface name to match your project conventions. Use it to quickly type API responses, configuration objects, or any JSON data structure. Saves hours of manual type definition and reduces the risk of type errors. All conversion happens in your browser.
FAQ
▶Is the JSON to TypeScript free to use?
Yes, completely free. No signup, no premium tiers, no hidden costs.
▶Is my data safe when using the JSON to TypeScript?
All processing happens in your browser. Your data never leaves your device.
▶Does the JSON to TypeScript work on mobile?
Yes, fully responsive. Works on smartphones, tablets, and desktops.
▶Do I need to install anything?
No. It runs entirely in your web browser. Just open the page and use it.
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