Free brain tests, built for accuracy and fun
BrainGauge is a collection of 12 free online brain tests, knowledge quizzes, and skill games. Whether you want to explore your reasoning, measure your reaction time in milliseconds, see how many English words you know, or settle a trivia argument with friends, every test here runs instantly in your browser — no account, no downloads, and nothing behind a paywall.
What can you test?
- Cognitive ability: our free IQ test offers patterns, numerical reasoning, counting shapes, and spatial reasoning, while the memory test, reaction time test, and spatial reasoning test measure specific mental skills.
- Knowledge: challenge yourself with American trivia, U.S. geography, U.S. history, pop culture, and a vocabulary size test.
- Skills: race through the maze escape challenge, sprint through mental math, or check your WPM on the typing speed test.
How scoring works
Each test gives you an instant result for its activity. IQ Lab shows actual answer accuracy, explanations, and a separate IQ conversion based on assumed reference values. That nonstandard game score is not actual IQ or a population percentile. Other tests provide their own score context. Your answers and personal bests stay on your device. We collect anonymous usage and score analytics as described in our privacy policy. No account or email is required.