What IQ do you need for college?

There is no minimum IQ for college. People who complete a four-year degree average roughly 110 to 115, and the average is higher at more selective universities (around 120 to 130). Those are descriptive averages of who tends to attend and graduate, not entry requirements — admissions look at grades, tests and other factors, not IQ.

What IQ do you need to join Mensa?

Mensa accepts the top 2% of the population — about the 98th percentile. On the standard SD-15 scale that is an IQ of 130; on the older SD-16 Stanford–Binet it is about 132; on the Cattell scale it is roughly 148. All three numbers describe the same rarity. Mensa accepts results from many approved tests, each on its own scale.

What IQ do you need to be a doctor?

There is no fixed IQ requirement to become a physician. Studies put the average for doctors in the low-to-mid 120s, reflecting the complexity of medical training and practice — but medical school admissions and licensing exams test specific knowledge and skills, not IQ, and the range among practising doctors is wide.

Is there a minimum IQ for any job?

Not formally. Higher-complexity occupations tend to have higher average IQs, but the spread within every occupation is large, and conscientiousness, training, experience and opportunity matter at least as much as cognitive ability. The 'you need an IQ of X to do job Y' framing is mostly a misreading of average data as a cutoff.

What IQ is considered 'genius'?

There is no official IQ for 'genius' — the word is a popular label, not a psychometric category. It is loosely applied to scores around 140 and above on the SD-15 scale (roughly the top 0.4%), and sometimes reserved for the top 0.1% (about 146 and up). In school settings, 'gifted' identification usually starts at 130, the top 2%.

What IQ Do You Need? College, Mensa, Careers & More

The honest version: these are averages, not gates

Almost every “what IQ do you need for X” question is really asking the wrong thing. There is no IQ requirement for college, for medicine, for law, for engineering — or for the overwhelming majority of jobs and goals. What there is, instead, is a body of research showing the average IQ of people who pursue and succeed at various things. Those averages are real and informative, but a population average is not a personal threshold.

The spread is always wide. Every occupation and education level contains people across a broad IQ range. Knowing the average tells you the centre of a distribution, not where its edges are.
Cognitive ability is one ingredient. Conscientiousness, motivation, opportunity, training, health and plain stubbornness predict real outcomes about as strongly as ability does (Schmidt & Hunter, 2004; Strenze, 2007). Plenty of people clear bars that “their IQ” supposedly couldn’t.
Higher complexity, higher average — that’s the real pattern. Jobs that involve more reasoning, learning and judgment have higher average IQs (Gottfredson, 1997). That’s a useful fact about the shape of the workforce; it is not a rule about who’s allowed in.

So read every number on this page as “here’s roughly where the middle of this group sits,” not “here’s the score you must beat.”

Education

The most-cited figure is that people who complete a four-year university degree average somewhere around 110 to 115. The average rises at more selective institutions (commonly quoted in the 120s) and is highest for those who finish a PhD — often in the high 120s. Community-college and high-school-graduate averages sit closer to the population mean of 100. None of these is a cutoff: open-admission colleges have no IQ floor at all, and the variation within every level is large. For what the bands themselves mean, see IQ classification ranges; for whether you can move your own number, can you improve your IQ?

Careers: complexity, not a licence

Occupational IQ data is best understood through job complexity. Roughly speaking: manual and routine service work clusters near the population average; skilled trades and technical roles a little above; managerial and professional work in the 110s; and the most cognitively demanding professions — physician, lawyer, scientist, senior engineer — in the low-to-mid 120s on average. But “on average” is doing all the work in that sentence. The within-occupation range is wide, the figures are estimates that vary between studies, and licensing and hiring test domain knowledge and skill, not IQ. Our article what is a good IQ score? walks through the complexity tiers in detail with sources.

High-IQ societies: it’s a percentile, not a number

The membership societies are the one place a real cutoff exists — but it’s defined as a percentile, and the matching IQ number depends entirely on the test’s scale. Mensa wants the top 2% (98th percentile): that’s 130 on the standard SD-15 scale, about 132 on the old SD-16 Stanford–Binet, and roughly 148 on the Cattell scale — the same rarity, three very different-looking numbers. Stricter societies raise the bar: Intertel at the 99th percentile (~135), the Triple Nine Society at the 99.9th (~146), Prometheus at roughly the 99.997th (~160). If you have a score on one scale and want to know what it is on another, our IQ scale converter does the maths on a live bell curve.

Where you’d land

Enter your IQ in the box above and the ladder shades everything you’d “clear” — but treat that with the usual caution: any single test result carries a margin of error of roughly ±5 points, online tests vary in how generously they score, and being above or below an average changes the odds, not the outcome. If you don’t have a number you trust, take the full IQ test for an actual SD-15 score with a domain-by-domain breakdown.

Take the full IQ test

A reference table tells you where the middle is. The test tells you where you are.

References

Gottfredson, L. S. (1997). Why g matters: The complexity of everyday life. Intelligence, 24(1), 79–132.
Schmidt, F. L., & Hunter, J. E. (2004). General mental ability in the world of work: Occupational attainment and job performance. Journal of Personality and Social Psychology, 86(1), 162–173.
Strenze, T. (2007). Intelligence and socioeconomic success: A meta-analytic review of longitudinal research. Intelligence, 35(5), 401–426.
Wai, J., Lubinski, D., & Benbow, C. P. (2009). Spatial ability for STEM domains: Aligning over 50 years of cumulative psychological knowledge. Journal of Educational Psychology, 101(4), 817–835.

What IQ do you need for…?

4-year university graduate