GRE to IQ: What GRE Scores Really Say About Intelligence

There is no scientifically valid way to convert a GRE score to an IQ score. No published study has ever linked the modern GRE to a full IQ battery, so every "GRE to IQ" chart circulating online is invented. What the research does show is more interesting than a fake table: the GRE is a genuinely cognitive test whose scores predict graduate-school outcomes across thousands of studies, and the reasons a conversion still fails reveal how intelligence measurement actually works. This article covers what the GRE measures, why the conversion charts break down, what honest percentile math looks like, and how high-IQ societies settled the question decades ago.

ETS, the maker of the GRE, describes the test as measuring "developed abilities" rather than intelligence. Its Verbal Reasoning measure assesses the ability to "analyze and draw conclusions from discourse" and "reason from incomplete data," and its Quantitative Reasoning measure covers the ability to "understand, interpret and analyze quantitative information." Those descriptions would fit comfortably in an intelligence test manual, and researchers have noticed.

The definitive evidence is a meta-analysis by Kuncel, Hezlett, and Ones (2001) covering 1,753 independent samples and 82,659 graduate students. After correcting for range restriction, GRE Verbal predicted graduate GPA at .34 and GRE Quantitative at .32, with faculty ratings of students predicted at .42 and .47 respectively. One caution: these are correlations with graduate-school outcomes, not with IQ scores. The authors' framing was explicitly cognitive: because the GRE sections resemble "many measures of general cognitive ability," they expected scores to predict academic performance, and they did.

In a later review, Kuncel and Hezlett (2010) grouped the GRE with the SAT, LSAT, GMAT, and MCAT as "standardized tests of cognitive abilities" and used the accumulated evidence to knock down several popular beliefs. The claims that admissions tests are mere proxies for socioeconomic status, that they are predictively biased, and that scores stop mattering above some threshold all failed against the data.

For a conversion to be legitimate, someone has to give the same people both tests and publish the linking equation. That study exists for the SAT: Frey and Detterman (2004) found the SAT correlated .82 with the general intelligence factor extracted from a military test battery in a sample of 917 people, and they published regression equations for estimating IQ from SAT scores. We cover that work in our article on SAT to IQ conversion. Nothing comparable has ever been published for the modern GRE. Every chart claiming a GRE of 320 equals some exact IQ is guessing.

The charts also stumble over the GRE's own history. Before August 2011 each section was scored 200 to 800; today's sections run 130 to 170. Many conversion tables still circulating online were built on the old scale, or even on the separate Analytical section that was retired in October 2002, and applying them to current scores is meaningless. A similar scale problem affects the ACT, which we explain in our guide to ACT to IQ conversion charts.

Coaching adds a final layer of trouble. An entire prep industry exists because GRE scores respond to practice and instruction, while a person's underlying general ability does not move with a study subscription. An "IQ" that rises after a vocabulary course was never an IQ.

ETS publishes exact percentile tables for roughly 790,000 test takers from July 2022 through June 2025, and the numbers dismantle the naive conversion logic. Among those takers the Verbal mean is 151.39 (standard deviation 8.43) and the Quantitative mean is 157.62 (standard deviation 9.90). The percentiles below are rarity among GRE takers, not IQ equivalents.

• A perfect score is common in Quant: A Quantitative 170 sits at only the 89th percentile of GRE takers, meaning roughly one taker in nine scores 168 or higher. A Verbal 170 sits at the 99th percentile. The same scaled score means wildly different things in the two sections.

• A 330 is not one number: A test taker with Verbal 165 and Quantitative 165 stands at the 95th percentile in one section and the 67th in the other. Any chart that converts a 330 composite to a single IQ is already broken before it starts.

• The sections barely agree: The correlation between Verbal and Quantitative scores among takers is just .44, so a single composite hides very different cognitive profiles.

The deeper problem is the norm group. GRE percentiles rank college graduates aiming at graduate school, a positively selected slice of the population. The median GRE taker is not a person of average intelligence, so mapping the 50th percentile of takers onto IQ 100 misclassifies nearly everyone. And because Quantitative tops out at the 89th percentile of this pool, the section simply cannot distinguish extremely high ability from very high ability. It runs out of ceiling.

If GRE scores could be trusted as IQ evidence, the societies that admit members by IQ would accept them. They used to, and they stopped. American Mensa accepts a GRE combined verbal plus quantitative score of 1250 only for tests taken before May 1994, and a combined 1875 across three sections for tests taken from May 1994 through September 30, 2001. For any GRE taken after that date, Mensa's published answer is "Not accepted." The Triple Nine Society, which sets its bar near the 99.9th percentile, accepts a combined 1460 or a three-section 2180, again only through September 2001, and states there are no exceptions.

Those old cutoffs are the only honest anchors that exist, and they apply to the old 200-to-800 scales only. Mensa frames its standard as the 98th percentile of the general population, which on a standard-deviation-15 IQ scale works out to roughly 130, but that is arithmetic on the society's percentile claim, not a measured conversion. How these organizations set their bars is covered in our guide to high-IQ societies. The takeaway is blunt: the institutions with the strongest incentive to treat the GRE as an IQ test decided a quarter-century ago that the modern version cannot serve as one.

A real answer requires a test built and normed as an intelligence test. The RIOT IQ test (the Reasoning and Intelligence Online Test), developed by intelligence researcher Dr. Russell T. Warne, publishes exactly what a conversion chart never does: an error band around every score. The free version delivers an estimate in about 8 minutes with a margin of error of 14.9 IQ points in either direction, the Basic version takes about 13 minutes with a margin of 5.6 points, and the Full version runs 15 subtests in about 52 minutes with a margin of 3.7 points. That transparency is the difference between measurement and guesswork. A GRE score tells you how you compare with other graduate-school applicants on developed verbal and quantitative skills. An IQ score from a normed test tells you where you stand in the general population, with the uncertainty stated up front.

No. ETS describes it as measuring developed verbal, quantitative, and writing abilities for graduate admissions. It is cognitively demanding, and researchers class it within the cognitive-ability testing family, but it is not normed on the general population.

Nobody knows, because no validated equation links the modern GRE to IQ. Sites offering an exact number are guessing. The honest answer is a percentile statement about GRE takers plus wide uncertainty about the population equivalent.

Only for tests taken on or before September 30, 2001. Older GREs qualify at 1250 (verbal plus quantitative, before May 1994) or 1875 (three sections, May 1994 through September 2001). Modern scores are not accepted.

No, the opposite. A Quantitative 170 is the 89th percentile of GRE takers, while a Verbal 170 is the 99th, per the 2022-2025 ETS tables.

Directionally yes. The SAT precedent (a .82 correlation with general ability) and the GRE's predictive validity suggest a strong link, but preparation, English proficiency, and math coursework add variance that has nothing to do with intelligence.

1. Educational Testing Service. (2025). GRE General Test interpretive data: Table 1A. ets.org

2. Frey, M. C., & Detterman, D. K. (2004). Scholastic assessment or g? The relationship between the Scholastic Assessment Test and general cognitive ability. Psychological Science, 15(6), 373-378. doi.org/10.1111/j.0956-7976.2004.00687.x

3. Kuncel, N. R., Hezlett, S. A., & Ones, D. S. (2001). A comprehensive meta-analysis of the predictive validity of the Graduate Record Examinations: Implications for graduate student selection and performance. Psychological Bulletin, 127(1), 162-181. doi.org/10.1037/0033-2909.127.1.162

4. Kuncel, N. R., & Hezlett, S. A. (2007). Standardized tests predict graduate students' success. Science, 315(5815), 1080-1081. doi.org/10.1126/science.1136618

5. Kuncel, N. R., & Hezlett, S. A. (2010). Fact and fiction in cognitive ability testing for admissions and hiring decisions. Current Directions in Psychological Science, 19(6), 339-345. doi.org/10.1177/0963721410389459

6. American Mensa. (n.d.). Qualifying test scores. us.mensa.org

7. Triple Nine Society. (n.d.). Qualifying test scores. triplenine.org