XML to Kotlin Converter

Working with XML data and need Kotlin models fast? XML supports both element content and attributes — this converter handles both when generating typed models. This free, browser-based converter parses your XML and generates clean, production-ready Kotlin code — no account required.

How to use this converter

1. Paste your XML into the left editor panel
2. Click Generate
3. Copy the generated Kotlin code from the right panel

No account. No upload. No tracking. Runs entirely in your browser.

The problem with manual XML-to-Kotlin mapping

Kotlin is a concise, null-safe JVM language language — typed data models are central to how it works. Yet copying fields from XML payloads into Kotlin data class definitions introduces subtle errors:

• Mistyped field names cause silent deserialization failures
• Missing optional fields trigger runtime panics or null errors
• Schema drift between API and model goes undetected until production

Kotlin data classes automatically generate equals(), hashCode(), copy(), and toString() — perfect for immutable data transfer objects.

This converter eliminates the manual step entirely.

Kotlin and XML: what you need to know

Kotlin is a concise, null-safe JVM language language, official Android language and popular for Spring Boot on JVM. It uses data class based with null-safety built in for structured data — making it a natural fit for XML-driven applications.

What the converter generates

The output consists of Kotlin data class with nullable (?) fields and default values. This is the idiomatic pattern for Kotlin data models, compatible with popular Kotlin serialization libraries.

A common gotcha

Kotlin distinguishes between nullable (String?) and non-nullable (String) types — this converter infers nullability from your input data.

XML input characteristics

XML allows mixed content (text + child elements), namespaces, and CDATA sections — more expressive but more verbose than JSON. XML is the foundation of many enterprise integration standards including XSLT, XSD, and SOAP.

Common use cases

• Keeping Kotlin structs in sync when XML schemas evolve
• Onboarding new team members by auto-generating the data layer
• Validating XML contract compatibility with Kotlin type definitions
• Generating Kotlin models from Android development API responses
• Creating typed DTOs for Ktor APIs
• Rapid prototyping with real XML payloads

Frequently asked questions

What serialization library does the generated Kotlin code assume?

The generated code is compatible with the standard Kotlin serialization ecosystem — Kotlin data class with nullable (?) fields and default values. No unusual dependencies required.

What version of Kotlin does the output target?

The converter targets modern Kotlin conventions — Kotlin data class with nullable (?) fields and default values. If you need output for an older version, the generated code can typically be adapted with minor changes.

Is my XML data sent to a server?

No. All conversion runs locally in your browser using client-side JavaScript. Your XML data never leaves your machine.

What XML inputs does this converter accept?

Paste any valid XML — including SOAP APIs, RSS/Atom feeds, Android layouts, enterprise data exchange. The converter infers types and generates a matching Kotlin model.

Related tools on LangStop

• XML Formatter & Validator — https://langstop.com/xml-formatter
• XML to Python Converter — https://langstop.com/xml-to-python
• XML to Go Converter — https://langstop.com/xml-to-go
• XML to Java Converter — https://langstop.com/xml-to-java
• XML to JSON Schema — https://langstop.com/xml-to-json-schema

If you work frequently with XML and Kotlin, bookmark this page to skip the manual model-writing step entirely.