What Does My IQ Score Mean? How to Read Your IQ Test Result

What you see on your result

When you finish the test on this site, your free result shows:

• your estimated IQ score;
• a level on the scale, such as "High average";
• your estimated percentile on the provisional scale for your age group;
• a marker on a reference curve centered at 100;
• your cognitive title, shown as the profile title, with a one-line description.

The detailed report adds a provisional model range around the score and estimated scores for the four test areas: pattern reasoning, spatial thinking, number reasoning and quick visual matching. The sections below go through each piece in turn.

Step 1: Place your score on the scale

An IQ score has no meaning on its own. It only makes sense as a position on a scale, and the scale has two anchors. The center is 100. The unit of distance is the standard deviation, which is 15 points. A score of 115 is one standard deviation above the center, 130 is two above, and 85 is one below.

The site groups the scale into six levels, and the detailed report sets them out in a table. The last column shows how much of a normal curve falls in each level. These shares are a property of the curve itself, not a count of real people who took the test.

Two things are worth knowing about labels. First, they differ between tests: many clinical tests, for instance, call the whole band from 90 to 109 "average". A label is a convenient name for a stretch of the scale, not a separate finding. Second, the site displays scores from 55 to 145. These are limits of the display, not limits of ability. Far out in the tails, any short test has few questions that can tell people apart, so a very extreme number would look more precise than it really is.

Step 2: Read the percentile correctly

A percentile tells you what share of the reference curve falls below your score. Here are some reference points on the 100 and 15 scale:

• 85 is about the 16th percentile;
• 100 is the 50th percentile;
• 110 is about the 75th percentile;
• 115 is about the 84th percentile;
• 130 is about the 98th percentile.

Two common mix-ups are worth avoiding.

A percentile is not a percentage of correct answers. If your result shows the 75th percentile, that does not mean you got 75% of the questions right. It is a position on the curve, not a mark out of 100.

Percentiles are stretched in the middle and squeezed at the ends. Because most of the curve sits near the center, a few points there move the percentile a lot. Going from 100 to 105 moves you from the 50th to about the 63rd percentile. Going from 130 to 135 moves you only from about the 98th to the 99th. So a small change in score near the middle can look dramatic in percentile terms without meaning much.

On this site there is one more point to keep in mind. The percentile is calculated from the provisional model scale for your age group. It is not your observed rank in a representative sample of the population. It is best read as "where this score sits on the model's curve", not as "the share of people I outperformed".

Step 3: Treat the range as part of the result

No test measures anyone perfectly. Every score contains some measurement error: a different set of questions, a better night's sleep or a lucky guess would have nudged it up or down. Professional testing guidance, such as the Standards for Educational and Psychological Testing, expects careful tests to report how precise their scores are, and the usual way to do that is a range around the score.

The detailed report on this site shows your score with a provisional model range, written as two numbers such as 101–123. This range reflects the uncertainty in the current scoring model. It does not estimate how much your score would vary from day to day, and it does not include every source of measurement error, such as your device, your surroundings or how alert you were. So the real uncertainty is, if anything, larger than the range suggests.

How to use it:

• Read the whole range as your result. The single score is the middle of the estimate, not a more "true" number than its neighbors.
• Compare ranges, not points. If your score and a friend's score have overlapping ranges, the difference between you is not clear from this test.
• Do not expect a retest to land on the same number. The range is not a forecast of your next score, and practice and the conditions on the day add their own variation.

Why two IQ tests can give you different numbers

It is common to take two tests and get two noticeably different scores. That is not usually a sign that one test is broken. Several ordinary reasons stack up:

1. Different tasks. A picture-based test like this one leaves out vocabulary and general knowledge, while many other tests lean heavily on them. If your strengths are verbal, a nonverbal test may place you differently, and the other way round.
2. Different reference groups. Each test compares you with its own reference group or model. Average performance on IQ tests has drifted over the decades, a pattern known as the Flynn effect, and a century-long meta-analysis found that the gains differ by kind of ability and have slowed in recent decades. Scales built at different times or in different ways need not line up.
3. Measurement error on both sides. Each score has its own range. Two ranges can easily sit several points apart by chance.
4. Practice. The second test benefits from the first. A meta-analysis of retesting found that scores rose by an adjusted average of about a quarter of a standard deviation on a repeat attempt, roughly 4 IQ points.
5. Conditions. Time of day, tiredness, noise, screen size and timing rules all differ between sittings.

Even carefully standardized clinical tests disagree more than most people expect. In a study of professional intelligence batteries given to school-age children and university students, Randy Floyd and colleagues estimated that about one in four people would receive an IQ more than 10 points higher or lower on a different battery. Between online tests built in different ways, you should expect at least as much variation.

If you want to retake the test on this site, the recommendation is to wait about 30 days. Repeating similar tasks soon after makes the new result less meaningful.

What the cognitive title means on this site

Every result here comes with a cognitive title. It is a short, shareable label for the shape of your score pattern. There are five:

• Pattern Solver: your pattern reasoning stands out.
• Spatial Navigator: your spatial thinking stands out.
• Number Explorer: your number reasoning stands out.
• Quick Observer: your quick visual matching stands out.
• Balanced Thinker: your profile is even across the measured areas.

The title names the test area where your estimated score was highest in this session. When your four area scores sit close together, no area stands out and you get Balanced Thinker instead. For children aged 4 to 8, who take the test with an adult, the title keeps the same name, and its one-line description is addressed to the parent.

It helps to be clear about what the title is not:

• It is not a level. It says nothing about how high or low your overall score is. Two people with very different overall scores can share the same title.
• It is not a personality type. It describes which kind of task went best in this test, not who you are.
• It is not permanent. If two of your areas were close, a retest could easily give you a different title.

Think of it as a friendly headline for your profile: something to share and talk about, with the detail underneath.

How to read your area profile

The detailed report shows an estimated score for each of the four test areas on the same 55–145 scale, with a model percentile for each, the area that scored highest and the one with the most room to grow, and the gap between them.

Profiles are interesting, and they are also the easiest part of a result to over-read. Each area score rests on far fewer questions than your overall score, so it is less precise. Research on professional tests urges the same caution. A review of cognitive profile analysis in school psychology describes long-standing concerns about basing decisions on strengths and weaknesses in score profiles. A factor-analytic study of a major children's test found that the general factor accounted for most of what its subtests had in common, while the separate ability indexes added comparatively little on their own.

Some practical rules follow from that:

• Look for large, clear gaps. A difference of a few points between two areas may simply reflect the particular questions you received.
• Remember what each area involves. Quick visual matching is about speed, so it is the area most likely to be affected by tiredness, an unfamiliar device or a slow mouse.
• Check it against everyday life. If your spatial score stands out and you have always been good with maps and flat-pack furniture, the pattern is more convincing. If it surprises you, hold it loosely.
• Use it for practice, not for labels. The report's tips and activities are a way to exercise each kind of thinking, not proof of a fixed strength or weakness.

As the report itself puts it, differences between areas describe this set of tasks, not a fixed limit or trait.

A worked example

Imagine a result that reads: estimated IQ 112, level High average, estimated percentile 79, cognitive title Spatial Navigator, and in the detailed report a provisional model range of 101–123.

Here is a sensible reading. On this test, performance sat a little under one standard deviation above the center of the provisional scale. Allowing for model uncertainty, the estimate runs from about the center to well into the High level, so "somewhere above the middle" is the honest summary. The 79th percentile is a position on the model's curve, not a ranking against real people. The title says spatial thinking was the strongest area this time, and the area scores will show whether that lead is large or only a few points. If this person takes the test again a month later and scores 106 or 118, nothing has gone wrong: differences of that size between two sittings are ordinary.

What your result cannot tell you

Your result is an estimate for entertainment and self-discovery. It is not a clinical diagnosis, and it should not be used for school-placement, employment or other high-stakes decisions. It cannot tell you whether you or your child has a learning difficulty, giftedness in any formal sense or a medical condition. Those questions belong with a qualified professional, such as a psychologist or a doctor, who can assess them properly.

What your result can do is give you a clear, honest picture of how you handled four kinds of picture-based reasoning on one occasion, with enough context to read it well. If you want to see how the scale and the range are calculated, the methodology page sets it out. For the background behind the scale itself, What Is IQ? covers where the score came from and what it leaves out.