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JSON to TypeScript Interface Converter

Paste any JSON payload to generate strongly-typed TypeScript interfaces and types automatically.

INPUT (RAW JSON)
TYPESCRIPT INTERFACE

📖 How to Convert JSON to TypeScript Interfaces Online

Manually writing TypeScript interfaces for complex API payloads is slow and error-prone. RetroBox JSON to TypeScript Converter recursively inspects any JSON object or array and derives nested interfaces with strict types.

⚡ STEP-BY-STEP INSTRUCTIONS:

  1. Paste your raw JSON API response into the left editor input box.
  2. The converter automatically parses types, array primitives, nested objects, and optional fields.
  3. Click 'Copy' to copy the formatted TypeScript interface directly into your `.ts` file.

❓ FREQUENTLY ASKED QUESTIONS (FAQ):

❓ Is my JSON data uploaded to any server?

No. Conversion runs 100% locally in your browser memory using client-side JavaScript. Zero data is transmitted to external servers.

POPULAR TOOLS:
JSON Formatter • SQL to Types • Paste to PNG • JWT Debugger
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