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Fast, accurate, and scientifically styled.

Popular Tests
Hot 🔥 IQ Test

50 mixed questions estimating overall intelligence.

 Hot 🔥 Autism Traits Questionnaire

36 questions assessing common autistic traits (non-diagnostic).

 Hot 🔥 ADHD Traits Questionnaire

36 questions on attention and impulsivity traits (non-diagnostic).
All Available Tests
Full IQ Test

50-question mixed IQ-style assessment.

 Logical Reasoning Test

Deduce conclusions from rules and statements.

 Numerical Reasoning Test

Work through numbers, ratios, and percentages.

 Verbal Reasoning Test

Language-based logic, meaning, and inference.

 Abstract Reasoning Test

Identify patterns and sequence rules.

 Pattern Recognition Test

Spot numeric and symbolic patterns quickly.

 Spatial Reasoning Test

Rotation, direction, and 3D thinking.

 Aptitude Test

General mixed aptitude practice questions.

 Inductive Reasoning Test

Infer rules from examples and sequences.

 Deductive Reasoning Test

Apply rules to reach valid conclusions.

 Critical Thinking Test

Evaluate arguments, evidence, and assumptions.

 Memory Test

Short-term recall with hidden prompts.

 Visual Perception Test

Visual discrimination and quick spotting.

 Reaction Time Test

Test your reflexes — click fast when the box turns green.

 Autism Traits Questionnaire (Adult)

36-question traits questionnaire (adult, non-diagnostic).

 ADHD Traits Questionnaire

Adult questionnaire covering attention and impulsivity traits (non-diagnostic).

 Anxiety Traits Questionnaire

Adult questionnaire about worry and tension patterns (non-diagnostic).

 Depression Traits Questionnaire

Adult questionnaire about mood and motivation patterns (non-diagnostic).
What Are Free Online IQ Tests?

Free Online IQ Tests and Brain Tests

HeadTests provides free online IQ tests designed to measure reasoning ability, pattern recognition, and logical thinking. Many intelligence tests focus on abstract reasoning and visual pattern detection, which are widely used in professional aptitude assessments and cognitive evaluations.

Online IQ tests have become one of the most popular ways to challenge your brain and evaluate cognitive performance. These tests measure skills such as logical reasoning, spatial awareness, problem solving, and fluid intelligence.

If you enjoy puzzles, pattern problems, riddles, and logic challenges, these brain tests provide an engaging way to measure your reasoning ability. Try the full test above and see how your score compares with typical IQ ranges.