Convert JSON to Kotlin Online

Turn a JSON file into Kotlin class code directly in your browser—upload your .json and download the generated KotlinClass output.

Root type nameJSON input

Kotlin output

Convert JSON to Kotlin Data Class — Generate Type Definitions Online

Paste a JSON sample (an API response, a config file, anything) and get a typed data class ready to paste into your kotlin codebase. Powered by quicktype, runs entirely in your browser. Switch tabs to convert the same JSON to TypeScript, Go, Python, Rust, Kotlin, Java, C#, or JSON Schema without re-pasting your input.

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