Get started with Kotlin

Kotlin is a modern but already mature programming language designed to make developers happier. It's concise, safe, interoperable with Java and other languages, and provides many ways to reuse code between multiple platforms for productive programming.

To start, why not take our tour of Kotlin? This tour covers the fundamentals of the Kotlin programming language and can be completed entirely within your browser.

Install Kotlin

Kotlin is included in each IntelliJ IDEA and Android Studio release. Download and install one of these IDEs to start using Kotlin.

Choose your Kotlin use case

Here you'll learn how to develop a console application and create unit tests with Kotlin.

Here you'll learn how to develop a backend application with Kotlin server-side.

Create your first backend application:
- Create a RESTful web service with Spring Boot
- Create HTTP APIs with Ktor
Learn how to mix Kotlin and Java code in your application.

Here you'll learn how to develop a cross-platform application using Kotlin Multiplatform.

Set up your environment for cross-platform development.
Create your first application for iOS and Android:
- Create a cross-platform application from scratch and:
  - Share business logic while keeping the UI native
  - Share business logic and UI
- Make your existing Android application work on iOS
- Create a cross-platform application using Ktor and SQLdelight
Explore sample projects.

To start using Kotlin for Android development, read Google's recommendation for getting started with Kotlin on Android.

From building data pipelines to productionizing machine learning models, Kotlin is a great choice for working with data and getting the most out of it.

Create and edit notebooks seamlessly within the IDE:
- Get started with Kotlin Notebook
Explore and experiment with your data:
- DataFrame – a library for data analysis and manipulation.
- Kandy – a plotting tool for data visualization.
Follow Kotlin for Data Analysis on Twitter: KotlinForData.

Join the Kotlin community

Stay in the loop with the latest updates across the Kotlin ecosystem and share your experience.

Join us on:
- Slack: get an invite.
- StackOverflow: subscribe to the "kotlin" tag.
Follow Kotlin on Youtube, Twitter, Bluesky, and Reddit.
Subscribe to Kotlin news.

If you encounter any difficulties or problems, report an issue in our issue tracker.

Is anything missing?

If anything is missing or seems confusing on this page, please share your feedback.

Last modified: 16 April 2025