Free Online IQ Test for Kids Aged 4 to 16

Our IQ test for kids is designed for children aged 4 to 16. We offer age-specific assessments for 4-6 year olds, 6-10 year olds, 10-12 year olds, and 12-16 year olds, each calibrated to the cognitive development norms of that age bracket. The questions, difficulty levels, and scoring benchmarks are all tailored so that results are meaningful and accurate for the specific age of the child taking the test. This means a 5-year-old is never compared against a 14-year-old, ensuring fair and reliable results.

Our assessment measures three core dimensions of cognitive ability: fluid reasoning (solving novel problems and recognising patterns), verbal comprehension (understanding word relationships and analogies), and spatial processing (mental rotation and visual transformation). These align with the factor structure used in professional intelligence assessments like the Wechsler Intelligence Scale for Children (WISC-V). The result is a detailed cognitive profile showing where your child excels and where they may benefit from additional support.

We offer a free preview of our IQ test so you can see the format, question types, and how the assessment works. For a full educational assessment with a detailed cognitive profile report, a small fee applies. This fee covers the psychometric scoring algorithms, personalised report generation, ongoing normative database maintenance, and access to our age-specific benchmarks. We believe in transparency, so there are no hidden costs or surprise charges.

No. Our test is designed to be fully accessible to non-readers. All questions use visual stimuli, pattern-based reasoning, or can be read aloud by a parent or guardian. This is deliberate: we want to measure cognitive ability rather than literacy skills, and it makes the test valid and fair for children as young as 4 years old. For older children who can read independently, the test works just as well without parental assistance.

A clinical IQ test administered by a registered psychologist (such as the full WISC-V) is considered the gold standard and is conducted in a controlled environment. Our online IQ test for kids uses similar question types and scoring principles, making it a strong screening tool for identifying cognitive strengths, potential giftedness, and areas for development. However, it cannot fully replicate the controlled conditions of a clinical setting. We recommend our test as an excellent first step, with professional follow-up for important decisions such as school placement or gifted programme entry. Learn more on our About Us page.

Yes, IQ scores can fluctuate, especially in younger children whose brains are still rapidly developing. Factors like tiredness, anxiety, test familiarity, and even the time of day can influence results. Research shows that fluid intelligence (novel problem-solving) tends to peak in late adolescence, while crystallized intelligence (accumulated knowledge) continues to grow into adulthood. We recommend retesting periodically (every 6-12 months) to track cognitive development trends rather than relying on a single score. Consistent patterns across multiple tests give a far more reliable picture.