Free IQ Test
Take this free IQ test with 30 questions covering pattern recognition, logical reasoning, mathematics, memory, and spatial thinking. Get your estimated IQ score instantly with category breakdowns. No sign-up, no paywall — 100% private and free.
How This Free IQ Test Works
This IQ test assesses cognitive ability across 5 domains: pattern recognition, logical reasoning, mathematical ability, working memory, and spatial reasoning. You will answer 30 timed questions of increasing difficulty. Your responses are scored and normalized to the standard IQ scale where 100 is the average, with a standard deviation of 15 points.
IQ Score Ranges
Below 70: Borderline — Significant cognitive challenges
70–84: Low Average — Below typical range
85–114: Average — Most people score here
115–129: High Average — Above typical range
130–144: Gifted — Top 2% of population
145+: Genius — Exceptionally rare intelligence
What Does an IQ Score Measure?
IQ (Intelligence Quotient) measures cognitive abilities relative to the general population. It assesses fluid intelligence — your ability to reason, recognize patterns, and solve novel problems — rather than crystallized intelligence (learned knowledge). Modern IQ tests like the Wechsler Adult Intelligence Scale (WAIS) and Stanford-Binet measure multiple cognitive domains rather than a single "intelligence" number.
IQ Test Categories Explained
Pattern Recognition: Identifying rules and sequences in visual or numerical patterns. This is often considered the purest measure of fluid intelligence. Logical Reasoning: Deductive and inductive reasoning through word problems and syllogisms. Mathematical Ability: Numerical computation, arithmetic reasoning, and quantitative problem-solving. Working Memory: Holding and manipulating information in your mind. Spatial Reasoning: Mental rotation, visualization, and understanding spatial relationships.
Is This IQ Test Accurate?
Online IQ tests provide an estimate, not a clinical measurement. Professional IQ tests (WAIS-IV, Stanford-Binet 5) are administered by psychologists over 1-2 hours and provide the most accurate results. This test gives a reasonable approximation based on well-established cognitive challenge types. For an official IQ assessment, consult a licensed psychologist.
Tips for Taking This Assessment
Answer each question honestly based on your real behavior and preferences, not what you think the ideal answer should be. Go with your first instinct rather than overthinking — spontaneous answers tend to be more accurate. Take the assessment in a quiet environment where you can focus without distractions. Remember that there are no right or wrong answers. Your results are meant to provide self-awareness and starting points for improvement, not definitive labels.
Frequently Asked Questions
How accurate is this online IQ test?
This test provides an estimate based on well-established cognitive challenge types. Professional IQ tests (WAIS-IV, Stanford-Binet) administered by psychologists are more accurate. Online tests can give a reasonable approximation but may differ from clinical results by 5-15 points.
What is a normal IQ score?
The average IQ score is 100, with most people (about 68%) scoring between 85 and 115. Scores above 130 are considered gifted (top 2%), and scores above 145 are exceptionally rare (top 0.1%). About 95% of people score between 70 and 130.
Does IQ change over time?
IQ tends to be relatively stable throughout adulthood, but it can change. Fluid intelligence (reasoning, problem-solving) typically peaks in your 20s-30s and gradually declines. Crystallized intelligence (knowledge, vocabulary) continues to increase throughout life.
What categories does this test measure?
Five cognitive domains: Pattern Recognition (identifying sequences and rules), Logical Reasoning (deductive and inductive logic), Mathematical Ability (numerical problem-solving), Working Memory (holding and manipulating information), and Spatial Reasoning (mental visualization and rotation).
Is my data private?
Yes, completely. All questions and scoring happen entirely in your browser. No answers, results, or personal data are sent to any server. When you close the page, everything is gone.
Can I improve my IQ score?
While IQ has a strong genetic component, you can improve cognitive performance through regular mental exercise, adequate sleep, physical exercise, healthy nutrition, learning new skills, and practicing problem-solving. Brain training games show modest improvements in specific areas.
Why do questions get harder?
Each category has questions at 3 difficulty levels (1-3 stars). Harder questions are weighted more heavily in the scoring. This adaptive difficulty helps differentiate between average and high-performing test-takers more accurately.