JSON Formatter & ValidatorSpecialized Version
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JSON to Kotlin

JSON to Kotlin

JSON to Kotlin

Convert between data formats instantly with this json to kotlin. Transform your data for different applications and programming languages.

Features

  • Instant Conversion: Transform data formats in milliseconds
  • Preserve Structure: Maintains data relationships and hierarchy
  • Error Handling: Clear feedback on conversion issues
  • Copy Output: One-click copying of converted data

Example

Input: `` {"id": 1, "name": "John", "tags": ["dev", "admin"]} `

Output: ` data class Root( val id: Int, val name: String, val tags: List ) ``

Tips

  • Uses Kotlin data classes
  • val for immutable properties
  • Works with kotlinx.serialization or Moshi

How to Use

1. Paste your JSON in the input area 2. Click convert to transform the data 3. Review the converted output 4. Copy or download the result

Best Practices

  • Validate your source data before conversion
  • Check the output for any formatting issues
  • Test with a small sample before converting large files
  • Keep backups of original data

Frequently Asked Questions

Is my data secure?

All processing happens locally in your browser. Your data is never sent to any server, ensuring complete privacy and security.

What if my JSON has errors?

The tool will highlight syntax errors and provide helpful messages to fix them. Common issues include missing quotes, trailing commas, and unescaped characters.

How do I make fields optional?

Use nullable types with default values: val name: String? = null. Add @SerialName for custom JSON keys.

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