About 123test

123test® is a privately owned and independent company. For over ten years, we have been creating and publishing tests on the internet. Our tests are designed to help you find serious answers to your questions about IQ, personality, or career assessment. Tests published on 123test.com are not "marketing tools" used to sell you various products and services, or to obtain personal information, email addresses or résumés from you.

123test is a Netherlands-based company with an organizational structure just like the internet. That means that although our headquarters are located at the Radboud University Nijmegen in the Netherlands, people from all over the world contribute to our network of websites.

Your privacy is guaranteed

As a highly experienced test publisher that specializes in online testing, 123test® is committed to safeguarding your privacy and we regard the protection of personal data as being fundamentally important to the operation of our business. We will never ask you to provide information that may identify you as a specific individual. An email address may be required when you choose to receive test results or a newsletter by email. Such email addresses are never used for any other purpose. Additional research questions concerning your educational level, age, and sex are not obligatory and may be skipped if you choose to do so. When you do provide such information, it is used solely for statistical purposes to improve our tests and services. We do not sell or share any of the information about you that is collected via our website.

How 123test ® makes money

123test® makes money through the advertisements we display on our website. We may also offer more extensive reports which you can purchase if you choose to do so. Your visit to our website and any test result you receive is always guaranteed to be completely free of charge. No strings attached. If you enjoy using 123test.com, we only ask that you help us grow by sending links to a test to your friends, family, and colleagues. That's the best "thank you", you can give us and we appreciate it greatly!

Tests are based on cognitive science

Our research staff is headed by Edwin van Thiel, PhD in Artificial Intelligence and Psychometrics, who is the co-founder and co-owner of the 123test Company. We aim to be the best in IQ and personality testing and career assessment. Our tests are free and fast, but they also have to be scientifically valid and reliable. To achieve all of these goals, for the last ten years we have been using a special test development scheme that has been highly successful. It includes:

  • Using scientific literature as a theoretical basis for tests
  • Collecting massive amounts of empirical data to ensure representative sampling
  • Drawing upon the skills and experience of PhD level test developers
  • Generating valid reports through 'expert systems' based on empirical findings
  • And some other stuff we prefer not to say


If you enjoyed taking the tests at 123test.com, help us spread the word. Post our website link on your website, blog or personal page in a social network. Send it to everyone you know. Please share our link. We appreciate your help.