A perfect 36 ACT score roughly corresponds to an IQ of approximately 145–150, placing you in the exceptionally gifted range. Only about 0.1% of test-takers earn a 36, reflecting the rarity of this level of cognitive performance. However, this is an estimate — the ACT measures achievement and learned skills in addition to raw cognitive ability.

ACT to IQ Conversion: Estimate Your IQ from Your ACT Score

Q: Can you convert ACT to IQ?

You can estimate IQ from ACT scores, but it's not an exact conversion. The ACT correlates with IQ at about 0.7, meaning there's a strong but imperfect relationship. A 30 ACT roughly corresponds to an IQ of about 122–126, while a 24 ACT roughly corresponds to an IQ of about 107–111.

Q: What ACT score is genius?

An ACT score of 34 or above roughly corresponds to the 'gifted' or 'genius' IQ range (135+). A 36 (perfect score) maps to approximately IQ 145–150. About 1% of test-takers score 34 or above. For context, Mensa requires an IQ in the top 2%, which roughly corresponds to an ACT of 32 or higher.

Q: Is the ACT an IQ test?

No, the ACT is a college readiness assessment, not an IQ test. It measures knowledge and skills in English, math, reading, and science that students are expected to have learned in high school. However, ACT scores correlate with IQ (r ≈ 0.7) because both require similar cognitive abilities like reasoning, working memory, and verbal comprehension.

Your ACT score can offer a rough estimate of your IQ. While the ACT is a college readiness exam — not an intelligence test — research shows a correlation of approximately 0.7 between ACT performance and IQ scores on standardized tests. This means ACT scores are a meaningful but imperfect proxy for cognitive ability.

ACT to IQ Calculator

Enter your ACT composite score (1–36) to see an estimated IQ range:

ACT Composite Score

ACT to IQ Conversion Table

This table shows estimated IQ equivalents for key ACT composite scores based on published research correlating ACT performance with standardized IQ assessments.

ACT Score	Estimated IQ Range	IQ Classification	ACT Percentile
36	145–150	Exceptionally Gifted	99.9th+
34	135–140	Very Superior / Gifted	99th
32	128–132	Superior / Gifted	97th
30	122–126	Superior	95th
28	117–121	High Average	90th
26	112–116	High Average	82nd
24	107–111	High Average	74th
22	102–106	Average	62nd
20	97–101	Average	49th
18	92–96	Average	36th
16	87–91	Low Average	24th

Why ACT and IQ Correlate

Both the ACT and IQ tests draw on overlapping cognitive skills. The ACT's four sections — English, Math, Reading, and Science — all require:

Verbal reasoning — parsing complex text and identifying logical relationships
Quantitative reasoning — applying mathematical concepts under time pressure
Working memory — holding multiple pieces of information simultaneously
Processing speed — producing accurate answers quickly
Fluid reasoning — applying learned knowledge to novel problems

Research by Frey and Detterman (2004) found a correlation of 0.77 between the old SAT and general intelligence (g). The ACT, which measures similar constructs, shows a comparable relationship. A correlation of ~0.7 means ACT scores explain roughly 49% of the variance in IQ — substantial, but far from the whole picture.

Achievement vs. Aptitude: Key Differences

The core distinction between the ACT and an IQ test is what each measures:

ACT (achievement) — measures what you have learned in school: specific grammar rules, geometry formulas, biology concepts. Coaching, test prep, and strong schooling can meaningfully raise ACT scores.
IQ (aptitude) — measures reasoning ability more independent of specific learned content. IQ is more resistant to coaching, though practice on test formats can still provide modest gains.

This means two students with identical IQs might score very differently on the ACT depending on school quality, effort, and test preparation. Conversely, a student who test-preps intensively may score higher on the ACT than their underlying cognitive ability would predict.

ACT Score Distributions

ACT Range	Label	% of Test-Takers	Typical College Tier
33–36	Exceptional	~3%	Ivy League / Top 10
29–32	Strong	~10%	Top 25–50
25–28	Above Average	~20%	Selective State Schools
20–24	Average	~35%	Most 4-Year Colleges
Below 20	Below Average	~32%	Open/Community Colleges

Frequently Asked Questions

What IQ is a 36 ACT?

A perfect 36 ACT score roughly corresponds to an IQ of approximately 145–150 — the exceptionally gifted range. Only about 0.1% of test-takers achieve a 36.

Can you convert ACT to IQ?

You can estimate IQ from ACT scores with moderate confidence. The correlation is roughly 0.7. A 30 ACT maps to approximately IQ 122–126, while a 24 maps to approximately IQ 107–111.

What ACT score is genius?

An ACT of 34+ roughly corresponds to the gifted/genius range (IQ 135+). A perfect 36 maps to approximately IQ 145–150. For Mensa-level (top 2%), an ACT of 32 or higher is the rough threshold.

Is the ACT an IQ test?

No — the ACT tests academic achievement, not pure cognitive ability. However, ACT scores correlate with IQ at ~0.7, because both tasks require similar reasoning and verbal skills.

Want to compare scores from different tests? See our SAT to IQ converter or explore IQ score ranges and classifications. Ready for a direct measure? Take our free IQ test.

Also see: What is a good IQ score?