Paste JSON and get TypeScript interfaces or PHP classes with typed properties, including nested objects and arrays, instantly in your browser.
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Tell us what you think about Generate TypeScript interfaces and PHP classes from JSON.
- Runs entirely in your browser — your JSON is never sent to a server
- Handles nested objects and arrays of objects
- Free, no account required
How it works
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1
Paste or enter the value you want to convert.
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2
Conversion happens instantly as you type.
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3
Review the result in the target format.
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4
Copy the result to your clipboard.
Why use this tool
Every dev utility, one place
Format, convert, encode, decode, and generate — no more juggling ten tabs.
100% private, always
Every tool runs in your browser — your code and data are never sent anywhere.
Works on any device
Runs on Windows, Mac, Linux, iOS, and Android — nothing to install.
Instant results
No queues, no build step — results update as you type.
Built to handle real data
Full Unicode support and RFC-compliant parsing, edge cases included.
Free, always
Free to use, with no rate limits, sign-up, or trial period.
Frequently asked questions
Each nested object becomes its own interface or class named after its key in PascalCase, and objects inside arrays use the singular form of the key.
PHP has no typed arrays, so the property is declared as array with a docblock describing the element type.
Null becomes null in TypeScript and mixed in PHP, since the real type cannot be inferred from the sample.
No. All conversion happens in your browser.
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