Average IQ in Japan
Based on the UniversalIQTest.com online dataset (Validated / All results)
The average IQ in Japan is 105.2 in our dataset of 5,610 test results. See the full distribution, confidence interval, and how Japan compares worldwide.
These are averages from self-selected participants in the UniversalIQTest.com online test (not population IQ).
Use N and 95% CI when comparing; avoid causal conclusions.
The displayed group score converts the group’s average percentile rank in the selected dataset view to an IQ-style scale (100, standard deviation 15). It is not the arithmetic mean of individual IQ scores.
Intervals use an approximate spread estimated from the interquartile range and sample size. They are indicative uncertainty ranges around the transformed group score, not validated confidence intervals for a population mean.
See Methodology & limits.
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IQ distribution in Japan (p10-p90)
IQ breakdowns in Japan by age, gender, education, and study area
Average IQ in Japan by age group
| Age group | IQ-style score | Approx. interval | N |
|---|---|---|---|
| Young Adult (19-35) | 106.9 | 106.3–107.5 | 2,147 |
| Youth (12-18) | 104 | 103.2–104.8 | 1,156 |
| Adult (36-65) | 103.7 | 103.1–104.3 | 2,148 |
| Senior (66-100) | 101.2 | 99–103.4 | 159 |
Average IQ in Japan by gender
| Gender | IQ-style score | Approx. interval | N |
|---|---|---|---|
| Male | 106.4 | 106–106.8 | 3,799 |
| Female | 101.8 | 101.2–102.4 | 1,811 |
Average IQ in Japan by education level
| Education level | IQ-style score | Approx. interval | N |
|---|---|---|---|
| Bachelor | 106.3 | 105.7–106.9 | 1,829 |
| Short-cycle tertiary | 104.5 | 103.8–105.2 | 1,765 |
| Primary or Secondary | 102.5 | 101.5–103.5 | 761 |
| Post Secondary | 104.3 | 103.2–105.4 | 720 |
| Master degree | 109.2 | 107.9–110.5 | 421 |
| Doctorate | 110.4 | 108.4–112.4 | 114 |
Average IQ in Japan by study area
| Rank | Study area | IQ-style score | Approx. interval | N |
|---|---|---|---|---|
| 1 | Computer Science | 109.6 | 108.1–111.1 | 269 |
| 2 | Physics | 109.3 | 107.2–111.4 | 152 |
| 3 | Chemistry | 108.3 | 106.6–110 | 194 |
| 4 | Engineering and Technology | 108.1 | 106.6–109.6 | 355 |
| 5 | Mathematics | 108 | 105.9–110.1 | 158 |
| 6 | Philosophy | 107.8 | 104–111.6 | 67 |
| 7 | Anthropology | 106.8 | 102.1–111.5 | 44 |
| 8 | Biology | 106.8 | 105–108.6 | 174 |
| 9 | Earth Science | 106.8 | 101.8–111.8 | 28 |
| 10 | Visual Arts | 105.8 | 103.5–108.1 | 129 |
| 11 | Law | 105.4 | 103.4–107.4 | 167 |
| 12 | Theology | 105.3 | 101.6–109 | 35 |
| 13 | Economics | 105 | 103.6–106.4 | 351 |
| 14 | Social Work | 104.8 | 99.7–109.9 | 41 |
| 15 | Medicine and Health | 104.6 | 102.9–106.3 | 295 |
| 16 | Political Science | 104.5 | 99.4–109.6 | 33 |
| 17 | No diploma | 104.2 | 103.6–104.8 | 2,121 |
| 18 | Psychology | 104.2 | 101.4–107 | 92 |
| 19 | Business | 103.5 | 101.7–105.3 | 204 |
| 20 | Sociology | 103.5 | 101.5–105.5 | 133 |
| 21 | Languages and Literature | 103 | 101.6–104.4 | 337 |
| 22 | History | 102.9 | 99.8–106 | 107 |
| 23 | Geography | 102.7 | 97.4–108 | 35 |
| 24 | Performing Arts | 102.3 | 99.2–105.4 | 75 |
Average IQ in Japan: frequently asked questions
- What is the average IQ in Japan?
- Our dataset shows an average of 105.2 IQ-style points for Japan, based on 5,610 results (95% confidence interval 104.8–105.6, median 107.5).
- How many people from Japan took the test?
- 13,744 results from Japan are included in our dataset, of which 5,610 pass our internal validation checks for timing, completion and consistency.
- Is this the same as the average IQ of the population?
- These are averages from self-selected participants in the UniversalIQTest.com online test (not population IQ).
Related statistics
Country IQ pages
Explore country-level IQ stats based on the UniversalIQTest.com online dataset.