About JSON to TypeScript Interface & Type Converter
Transform any JSON payload into clean, strongly-typed TypeScript declarations. Automatically infers primitives, nested objects, array types, and generates exportable interface or type definitions with optional readonly modifiers.
Key Capabilities & Features
- Converts JSON to interface or type declarations
- Recursive nested object and array type inference
- Readonly modifier toggle
- Configurable root interface name
- 1-Click copy and .d.ts export
How to Use JSON to TypeScript Interface & Type Converter
1
Paste JSON
Insert your JSON payload into the input editor.
2
Set Options
Choose interface vs type and configure naming.
3
Copy TypeScript
Copy or download the generated TypeScript definitions.
Privacy & In-Browser Execution Guarantee
JSON schemas are parsed locally in browser memory.
Frequently Asked Questions
Does this handle nested JSON objects and arrays?
Yes! It recursively generates sub-interfaces for all nested objects and infers array item types cleanly.
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