IQ Test for 13 Year Olds

13 is the youngest age we suggest for this IQ test, ideally with a parent's okay: 25 visual puzzles, about 12 minutes, and no sign-up to start.

What's your IQ?

Take the IQ test

25 questions · about 12 minutes

Want the average rather than a test? The average IQ of a 13 year old is 100, at every age.

The test at a glance

Questions: 25 visual puzzles
Question types: 5 sets, each easy to hard
Time: 12-minute timer
Scoring: Same for every age, not age-adjusted
Cost: No sign-up to start. When you finish, you choose a report to see your result.

Scores are not age-normed, and this is not a clinical or diagnostic test.

Thirteen is when many people first take an IQ test: you start secondary school subjects that feel harder, friends share scores, and a class might touch on intelligence.

This page is for 13 year olds and for parents deciding whether it is a good idea. It is honest about what the number means at your age.

How this test works for a 13 year old

It is the same test as for adults, scored the same way for everyone, and it is not age-adjusted. You are not compared only with other 13 year olds. Reasoning keeps developing through the teens, so a 13 year old will often get fewer right than they will at 17.

Take it alone, in one go, somewhere quiet. Help changes the result.
The first puzzle in each set is the easiest and the last is hard. Most people miss some.
Skip a stuck puzzle and come back. The 12-minute timer runs for the whole test.

What changes around 13

Between 12 and 16 the brain is still changing. In a 2011 study in Nature, researchers at University College London tested 33 teenagers at 12 to 16 and again about four years later. Some verbal and non-verbal scores moved by as much as 20 points, in both directions, and the changes matched changes in brain structure.

So a number at 13 is a snapshot. Many schools also ask students to choose subjects in Year 8 or 9 (England) or the equivalent, and it is tempting to use a score for that. School reports and teachers' advice are a far better guide.

What scores mean at 13

On a normed test such as the WISC-V, 100 is average for a 13 year old and about two thirds score between 85 and 115. The table shows what share of the age group each score beats. Our test is not age-normed, so read our result as a rough estimate on an adult-style scale.

IQ	Higher than	How rare
85	15.9% of people	Common
100	50.0% of people	Common
110	74.8% of people	about 1 in 4 this high
117	87.1% of people	about 1 in 8 this high
125	95.2% of people	about 1 in 21 this high
130	97.7% of people	about 1 in 44 this high

Computed from the normal curve (mean 100, standard deviation 15). Applies to properly normed tests.