Why Take an IQ Test?
Taking an IQ test is not just a brain workout. An IQ test can result in a lasting impact in your personal life and in your career. Ultimately, it’s about knowing yourself better, which is the key to success.
Create a Pivotal Moment in Your Life
Are you living up to your potential? Intelligence tests like CheckIQ can be the spark of confidence you need to change your life
Compare Your Intelligence to Your Peers
Over 700,000 people have taken our IQ test. See how your IQ compares to the average IQ and to people in your age group and country.
Discover Opportunities That Match Your Potential
Our reliable IQ test reveals your strengths, helping you choose the career and educational paths that fit you best.
Research indicates that IQ scores are a strong predictor of academic success.
Welcome to the International IQ Test.
This IQ test has been taken by over 16 million people and calibrated to the global population using standard psychometric criteria (mean IQ: 100).
You’ll get your IQ score for free. No payment required.
Take our free
Professional IQ Tests
Get your IQ in only 20 minutes and a Score Report
Free scientifically validated IQ tests and psychometric tools.
The Most Accurate Online IQ Test
Assess your IQ with precision using a cutting-edge adaptive online IQ test, developed by the CheckIQ™ research team.
Sleep Test
Learn how to sleep like a pro
Benefits of taking the test
A large study of Spanish adults found that sleep health, measured with RU-SATED, was the single strongest predictor of how healthy people felt, beating out diet, exercise, smoking, and alcohol. In fact, moving from a “poor” RU-SATED score (below 8) to a “good” one (8 or higher) was linked to roughly a 70 percent jump in self‑rated physical wellbeing, more than double the boost seen from the same level of improvement in physical activity. Knowing your own RU SATED score helps you spot exactly which of the six sleep pillars need work, giving you a clear, high‑impact target for better overall health.
History of the test
The RU-SATED checklist began at the University of Pittsburgh, where sleep researcher Dr. Daniel J. Buysse first framed “sleep health” as a positive, measurable goal in 2014 and summed it up with five items called SATED (Satisfaction, Alertness, Timing, Efficiency, Duration). Two years later the team added “Regularity”, emphasizing a steady bedtime and wake‑time—to create the six‑item RU-SATED scale we know today. Early studies from 2016‑2019 showed the new survey was both reliable and useful for large groups of adults. Since then, RU-SATED has been translated into multiple languages, validated on every continent, and adopted by researchers and clinicians alike as a quick snapshot of overall sleep health.
“It’s so incredible to finally be understood.”
Only 10 minutes to get a “freakishly accurate” description of who you are and why you do things the way you do.
21K+
Tests taken today
11M+
Tests taken in Australia
1.5B+
Total tests taken
91.2%
Results rated as accurate or very accurate
Curious how accurate we are about you?
We’ve got personality tests down to a science
Truity personality assessments help businesses increase productivity, reduce conflict and enhance communications. Get started in minutes. No consultants or wasted time — just results.
OVER 4 000 000 HAPPY TEST TAKERS
Discover what you are great at
HIGH5 is a strengths test for individuals, teams and organizations to unlock their full potential by identifying and maximizing what motivates and energizes them
For individuals
Learn how to use a strengths-based approach and your strengths to achieve personal and professional goals.
For teams
Discover how to create high-performance teams and grow their performance with strengths-based practices.
For organizations
Create a strengths-based culture where every person can be at their best.
For coaches
Become a strengths champion and utilize a strengths perspective to help your clients succeed at work
Go beyond the strengths test
HIGH5 platform ensures your positive change does not end with just taking the test. Discover the full range of HIGH5 tools for every stakeholder.