Test score to IQ converters

Turn an SAT, ACT, ASVAB, Wonderlic, GRE, LSAT, GMAT, CCAT, MCAT or UCAT score into an estimated IQ. None of these tests has an official conversion, so each converter gives a likely range, a full lookup table and a grade for the evidence behind it.

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An example score on each test, the IQ it points to, and how strong the evidence is.
Test	Example	Likely IQ	Evidence
SAT to IQSAT (College Board)SAT 1400 · moderate evidence	1400	117106 to 129	Moderate
ACT to IQACT (American College Testing)ACT 28 · moderate evidence	28	114102 to 127	Moderate
ASVAB to IQASVAB (Armed Services Vocational Aptitude Battery), AFQT scoreAFQT 75 · moderate evidence	75	10897 to 120	Moderate
Wonderlic to IQWonderlic Personnel Test (WPT)Wonderlic 30 · limited evidence	30	113102 to 125	Limited
GRE to IQGRE General Test (ETS)GRE 320 · weak evidence	320	119107 to 130	Weak
LSAT to IQLSAT (Law School Admission Test)LSAT 165 · weak evidence	165	119106 to 131	Weak
GMAT to IQGMAT Focus EditionGMAT 655 · weak evidence	655	118106 to 131	Weak
CCAT to IQCriteria Cognitive Aptitude Test (CCAT)CCAT 30 · weak evidence	30	10996 to 122	Weak
MCAT to IQMCAT (Medical College Admission Test)MCAT 512 · weak evidence	512	120108 to 132	Weak
UCAT to IQUCAT (University Clinical Aptitude Test)UCAT 2300 · weak evidence	2300	122109 to 135	Weak

IQ to test score

Going the other way, these converters show the score people at a given IQ typically get, with the range most of them fall in. The two directions are not inverses, because both regress to the mean.

IQ to SAT converterTypical SAT score at each IQ, with a likely range
IQ to ACT converterTypical ACT score at each IQ, with a likely range
IQ to GRE converterTypical GRE score at each IQ, with a likely range

Typical score at four IQs. GRE is the Verbal plus Quant total. Each is a middle estimate; the range at any one IQ is wide.

	SAT	ACT	GRE
IQ 100	990	17	298
IQ 115	1210	23	311
IQ 130	1410	30	323
IQ 145	1570	35	336

What these converters do differently

Most score to IQ tools give a single number taken from a percentile chart. That answers how rare a score is, and it stops there. We do three more things.

Show a range. One test score cannot pin down IQ. Every result comes with the range that about four in five people at that score fall in.
Correct for regression to the mean. A test and IQ are not perfectly correlated, so very high scores usually come from people who are high, but not quite as high, on IQ. Each page shows both the most likely IQ and the higher number you would get if the test were a perfect measure.
Grade the evidence. Some links between a test and IQ are published and some are assumed. Every page says which and lists the assumptions.

All ten converters use one model. Its formula and every assumption are on the score conversion method page.

Score to IQ converters: common questions

Can you convert a test score into an IQ?

Only as an estimate. A score on the SAT, GRE or any other test correlates with IQ but is not the same thing, so a conversion gives a most likely IQ and a range. No conversion replaces an IQ test taken under supervised, standardised conditions.

Is there an official score to IQ conversion?

No. None of the test publishers (College Board, ACT, ETS, LSAC, GMAC, the AAMC, Wonderlic, Criteria or the US Department of Defense) publishes an IQ conversion. Every chart online is someone's model. Ours publishes its assumptions on each page.

Why do these estimates look lower than other converters?

Many converters match percentiles, so the top 1% of SAT scores becomes an IQ near 135 or higher. That measures rarity, not IQ. Because tests and IQ correlate at about .6 to .8, high scores regress towards average, so the most likely IQ is lower. Each page shows both numbers.

Which conversion is the most reliable?

The ASVAB (AFQT), because it is scored against a nationally representative sample, and the SAT and ACT, because published studies link them to general ability. GRE, LSAT, GMAT, MCAT, UCAT and CCAT rest on assumptions because no published study links them to IQ.

How wide are the ranges?

Each range covers about four in five people at that score. It is typically 20 to 25 IQ points wide, roughly plus or minus 10 to 12 points, which reflects how loosely one test score pins down IQ.

Can I use these for a child?

No. These converters are for adult and adolescent admissions and employment tests. Speak to a school or educational psychologist about a child.