JSON to Kotlin
Generate Kotlin data classes from JSON. Nullable types inferred, ready for kotlinx.serialization or Moshi.
Why use our JSON to Kotlin?
Generate Kotlin data classes from JSON. Nullable types inferred, ready for kotlinx.serialization or Moshi.
What the json to kotlin does
Generate Kotlin data classes from JSON. Nullable types inferred, ready for kotlinx.serialization or Moshi.
Great for json to kotlin
A quick, free way to handle json to kotlin — no sign-up, no install, results in milliseconds.
Private & instant
Lossless, browser-only conversion with instant results and nothing uploaded.
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OpenRelated reading
Deep-dive guides that pair well with the JSON to Kotlin.
API Guides
How APIs use JSON for data exchange
From REST payloads to GraphQL responses and webhooks, JSON is the lingua franca of modern APIs. Here's how it works in practice.
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Understanding JSON objects, arrays and nested data
The two containers JSON gives you — objects and arrays — combine into every real-world payload. Here's how to model them well.
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What is JSON? A developer's introduction
Understand the JSON data format, its history, and why it dominates modern APIs and configuration files.
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