Skip to content
Get Full Access

Certification course

Learn Kotlin.

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

4.8 · 874 reviews

$95Exam and certificate included

Full AccessEvery course and exam · $499

14-day money-back guaranteeInstant accessLifetime access

Secure checkout Visa Mastercard American Express PayPalApple Pay Google Pay
  • BeginnerNo experience needed
  • 40 hoursAt your own pace
  • 24 modulesLessons, quizzes, exercises
  • Exam includedNo need to buy separately
  • W3Schools Hero1-year subscription included

Our learners work at

  • Microsoft
  • Google
  • Amazon
  • Meta
  • Netflix
  • NVIDIA
  • IBM
  • Oracle

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. 3 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 subscription.

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.

Reviews

What learners say.

4.8 · 874 reviews

  • W3 Schools' 'Full Access' plan may be the best learning resource I've ever found. I've read books, followed various online tutorials, and completed university studies on the subjects, but W3 Schools' method is simply superior. Topics a...

    Ian B.Verified buyerUnited StatesFull Access

  • Practicing Python is awesome! I enjoy daily practice and it's so fun!!! W3school to me is a great platform for all Tech people Thank you so much

    Samuel A.Verified buyerGhanaPython

  • Muy buena experiencia. El curso de SQL tiene contenido claro y completo, y el examen de certificación me gustó especialmente por su nivel de dificultad y por combinar conocimientos teóricos y prácticos. Muy recomendable para reforzar y v...

    Guille G.Verified buyerArgentinaSQL

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 subscription
  • Lifetime access
14-day money-back guarantee, as long as no exam attempt is used.

Best value

Full Access

$499one-time

  • 45+ certifications
  • W3Schools Hero subscription for life
  • Lifetime access
  • New courses and exams included as we add them
Get Full Access 14-day money-back guarantee, as long as no exam attempt is used.

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.