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JSON to Kotlin Data Class

JSON & Data Format · Free Online Tool

Convert JSON to Kotlin data class.

By CoderNewbie Team
Success
155 chars
224 chars
data class Root(
    val name: String,
    val age: Long,
    val active: Boolean,
    val score: Double,
    val address: Address,
    val skills: List<Any>
)

data class Address(
    val city: String,
    val zip: String
)

Type Inference

Long, Double, Boolean, String — chosen from your values.

Data Classes

Idiomatic data class with immutable val properties.

Nested Classes

Objects become named data classes, recursively.

How to Use JSON to Kotlin Data Class

  1. 1Paste your input data (JSON, CSV, XML, YAML, etc.) into the input field.
  2. 2The tool automatically processes and validates your data.
  3. 3Review the converted output in the result panel.
  4. 4Copy or download the converted result.

Features

  • ✓100% free — no signup, no subscription, no ads
  • ✓Runs entirely in your browser — data never leaves your device
  • ✓Fast and lightweight — instant results
  • ✓Cross-platform — works on desktop, tablet, and mobile

Frequently Asked Questions

Can I convert large JSON files?

Yes, but performance depends on your browser. Files up to 10MB are generally handled well.

Do you validate the input?

Yes, most tools validate input and show error messages with line numbers for invalid data.

Can I download the converted result?

Yes, most conversion tools provide a download button for the output file.

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