What Is a Good IQ Score? A Plain-English Guide
"Good" depends on what you compare yourself to, and IQ is built entirely around comparison. A score of 100 is not a grade out of 100. It is the middle of the group the test was calibrated on. So the real question behind "what is a good IQ score" is "how far above or below the middle am I, and how rare is that?" This guide answers that in plain numbers, and then in plain life.
How the scale is built
Modern IQ tests are set up so that scores follow a bell curve. The average is 100 and the standard deviation is 15, which is a way of saying how spread out the scores are. Two simple consequences fall out of that:
- About 68 percent of people score between 85 and 115.
- About 95 percent score between 70 and 130.
Only around 2 percent of people score above 130, and around 2 percent score below 70. Most of us live in the wide, comfortable middle.
One caution about older material: some historical scales used a standard deviation of 24, so the same person could be listed with a very different number depending on the test. Today the 15-point version is the norm, and it is what you should assume when you read a score.
Score bands, from the bottom to the top
| Score | Rough percentile | What it means |
|---|---|---|
| 130 and above | 98th and up | Very high. About one person in fifty. |
| 120 to 129 | 91st to 97th | High. Typical of many graduate-level students. |
| 110 to 119 | 75th to 90th | Above average. |
| 90 to 109 | 25th to 74th | Average. Half of the population lives here. |
| 80 to 89 | 9th to 24th | Below average. |
| 70 to 79 | 2nd to 8th | Low. |
| Below 70 | Under 2nd | Very low. A clinical assessment is the right next step. |
Treat the bands as signposts rather than boxes. A 109 and a 111 are statistically indistinguishable, and a single online test has a margin of error of several points either way.
A "good" score in real terms
Here is a more useful way to put it.
Around 100. You are in the large middle. You learn new skills at a normal pace, and nothing about the number limits what you can do. Most successful people in most professions sit between 100 and 120.
Around 110 to 115. You pick up abstract ideas a bit faster than most. Courses that lean on reasoning, like statistics or programming, tend to click sooner. If you got here on an online test and you are unsure whether to trust it, the result is perfectly consistent with being good at your job and quick at puzzles.
Around 120 to 130. You are in the top tenth. This is where a lot of people who enjoy hard problems end up. It does not make you immune to bad decisions, and it does not guarantee anything beyond a head start on learning.
130 and above. The top two percent. Societies like Mensa set their threshold here, but they require a supervised test, not a certificate from an online one.
The number is not the person
IQ correlates with school results and, more loosely, with job performance, but it explains only part of the picture. Researchers who follow people over decades find that persistence, conscientiousness, health and the quality of the environment in which someone grows up each carry weight of their own. If you score 135 and never practice anything, you will be passed by someone at 110 who works every day. A useful mindset is to treat your score as a reading of one tool in your kit, not a verdict on your worth.
It is also worth remembering the Flynn effect: across the twentieth century, raw performance on IQ tests rose by about three points per decade in many countries. Norms get updated for this, which is why a test normed fifty years ago and one normed last year can disagree about the same person.
What a score from a 40-question online test can tell you
Cognivo IQ Test takes 40 questions, 25 of which are Raven-style matrices, plus number series, logic items and short memory tasks. Because it mixes pattern reasoning with working memory, the result gives you a balanced estimate rather than a measurement of a single skill. After the test you receive your score with a certificate and a breakdown of the answers, so you can see whether the matrices or the memory items pulled the number up or down.
Be honest with yourself about the limits. An unsupervised test taken on a phone has more noise than a psychologist's session: a noisy room, a bad night's sleep or a mis-tap can shift the result. For that reason the sensible reading of an online score is a range, not a point. If you got 112, think "somewhere around 105 to 120" and you will be right far more often.
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What to do with a score you like, and one you do not
If you are happy with the number, use it as a baseline and keep the certificate. If you are not, resist the urge to retake the test immediately. A second run within the hour mostly measures how well you remember the first. A better move is to work out where you lost points. People are often surprised that the matrix section is the most trainable; practicing it for a couple of weeks, as in our guide to Raven-style matrix practice, usually moves the next result more than any amount of general "brain tricks".
There are also honest ways to give your reasoning a boost: sleep, exercise, reading difficult material and learning something new. The guide to raising your IQ separates what the research supports from what is just marketing.
The short version
A good IQ score is any score you can use: it shows where you stand, where your strengths are and what to train. Above 100 you are above average, above 115 you are in the top sixth, and above 130 you are in the top two percent. Past those numbers, the most interesting question is not how high you are, but what you do with the thinking you have, and a well-built test is a decent first step towards finding out.