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Certification course

Learn Kotlin.

Learn Kotlin and build apps for the platform used by over 3 billion devices.

$95Exam and certificate included

All courses · $399

Already know Kotlin? Go straight to the exam · $95

14-day money-back guarantee  ·  Instant access  ·  Lifetime access

  • BeginnerNo experience needed
  • 40 hoursAt your own pace
  • 24 modulesLessons, quizzes, exercises
  • 3 attemptsAt the exam, included
  • 1 yearW3Schools Hero included

What you'll learn

Real Kotlin skills, step by step.

Everything you need to use Kotlin with confidence, from the first line to real projects.

  • Learn what Kotlin is and set up your environment
  • Understand Kotlin syntax and basic concepts
  • Work with variables and data types
  • Use operators and control flow (if, when, while)
  • Create and use arrays and loops
  • Write functions in Kotlin
  • Learn object-oriented programming with classes
  • Work with constructors and inheritance
  • Create class functions and objects

Roles you'll be ready for

  • Kotlin Developer
  • Android Developer
  • Mobile App Developer
  • Back-End Developer
  • Software Engineer
  • Full Stack Developer
  • Java Developer
  • Cross-Platform Developer
  • API Developer
  • Game Developer
  • Technical Lead
  • Freelance App Developer

Syllabus

Everything the course covers.

5 chapters · 24 modules · 40 hours

01Getting started6 modules
  • Kotlin HOME
  • Kotlin Intro
  • Kotlin Get Started
  • Kotlin Syntax
  • Kotlin Output
  • Kotlin Comments
02Variables and data types5 modules
  • Kotlin Variables
  • Kotlin Data Types
  • Kotlin Operators
  • Kotlin Strings
  • Kotlin Booleans
03Control flow4 modules
  • Kotlin If...Else
  • Kotlin When
  • Kotlin While Loop
  • Kotlin Break/Continue
04Arrays, loops and functions4 modules
  • Kotlin Arrays
  • Kotlin For Loop
  • Kotlin Ranges
  • Kotlin Functions
05Object-oriented Kotlin5 modules
  • Kotlin OOP
  • Kotlin Classes/Objects
  • Kotlin Constructors
  • Kotlin Class Functions
  • Kotlin Inheritance

Your certificate

Become a Certified Kotlin Developer.

A credential from the site that has taught the web since 1999.

  1. Learn

    Lessons, quizzes and exercises. No deadlines.

  2. Pass the exam

    Online, multiple choice. Three attempts, results instantly.

  3. Share it

    On LinkedIn and your CV. Employers verify it by link or QR code.

Your score sets your level: Intermediate 40% · Advanced 75% · Professional 90%

Certified Kotlin Developer

Also included

A year of W3Schools Hero.

Keep learning and building long after the exam. Worth $120, included.

  • Unlimited learning in the app

    Full access on iOS and Android. Learn anywhere.

  • Build with Spaces

    Your own space to build, test and deploy real projects.

  • Ad-free W3Schools

    Learn on w3schools.com without ads.

  • Leaderboard and challenges

    Earn XP, keep your streak, compete with other learners.

Pricing

One course, or all of them.

This course

Learn Kotlin

$95one-time

  • The full Kotlin course
  • Kotlin exam and certificate
  • 1 year of W3Schools Hero
  • Lifetime access
14-day money-back guarantee.

Best value

Full Access

$399one-time

  • All 45+ courses, including Kotlin
  • Every exam and certificate
  • W3Schools Hero for life
  • Lifetime access
Get Full Access 14-day money-back guarantee.

Questions? Answers.

Do you have a money-back guarantee?

Yes. If you are not satisfied, you get your money back within 14 days of purchase, as long as no exam attempts are used. Our refund policy.

How fast do I get access?

Instantly. Right after purchase you get an email with access to the course and the exam.

How does the exam work?

The exam is online and multiple choice. You get 3 attempts and choose when to take each one. Your score sets your level: Intermediate (40%), Advanced (75%) or Professional (90%).

Does the certificate expire?

No. The certificate never expires. It is issued in your name and employers can verify it with a unique link or QR code.

What is the difference between the course and the exam?

The course includes lessons, exercises, progress tracking and the exam. If you already know the subject, you can buy the exam only and go straight to certification.