Sharpen your coding skillsChallenge yourself on small coding exercises called "kata". Each kata is crafted by the community to help you strengthen different coding techniques. Master your current language of choice, or quickly pick up any of the 55+ programming languages supported.Join the DojoGet instant feedbackSolve kata with your coding style right in the browser and use test cases (TDD) to check it as you progress. Retrain with new, creative, and optimized approaches. Find all of the bugs in your programming practice.Earn ranks and honorKata code challenges are ranked from beginner to expert level. As you complete higher-ranked kata, you level up your profile and push your software development skills to your highest potential.What can I use Codewars for?From beginner to expert and beyond...Get new perspectivesSolve challenges then view how others solved the same challenge. Pickup new techniques from some of the most skilled developers in the world.Learn new languagesSolve challenges in a language you are comfortable with, then do it in a language you want to improve with. Level up across different languages.Compete with peersCompete against your friends, colleagues, and the community at large. Allow competition to motivate you  towards mastering your craft.Extremely well done and an excellent example of mastery learning.Ahmed Omran@this_ahmedAccidentally got addicted to codewars, oops.Kelly WilliamsCoderBuild self-confidenceNot sure if you are progressing well as a programmer? Push yourself to your limits and show yourself what you are really made of.Become a mentorLend your expertise to others, either indirectly by contributing great solutions or directly by creating your own kata and reviewing code.The latestInsights from Codewars staff and community.Saheed BadruJune 22, 2026Vanessa GreeneJanuary 14, 2025codewars IS BUILT ONThe world's most advanced coding assessment platform for organizations looking to scale their hiring, upskilling, and certification progr