Average IQ in Japan
Based on the UniversalIQTest.com online dataset (Validated / All results)
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.
See Methodology & limits.
Mean IQ
105.5
95% CI: 105.1 to 105.9
Validated / All N
5,378 / 13,196
Validation rate: 40.8%
p10 / Median (p50) / p90
p10: 88.8
p50: 107.8
p90: 125.8
Avg time
44:03
Last updated
2026-03-24
View
Current view N: 5,378
IQ distribution in Japan (p10-p90)
Japan
85100115
IQ score
IQ breakdowns in Japan by age, gender, education, and study area
Average IQ in Japan by age group
Age group table
| Age group | Mean IQ | 95% CI | N |
|---|---|---|---|
| Young Adult (19-35) | 107.2 | 106.6 to 107.8 | 2,030 |
| Youth (12-18) | 104.3 | 103.5 to 105.1 | 1,116 |
| Adult (36-65) | 103.9 | 103.3 to 104.5 | 2,080 |
| Senior (66-100) | 101.7 | 99.4 to 104 | 152 |
Average IQ in Japan by gender
Gender table
| Gender | Mean IQ | 95% CI | N |
|---|---|---|---|
| Male | 106.7 | 106.2 to 107.2 | 3,643 |
| Female | 102.1 | 101.5 to 102.7 | 1,735 |
Average IQ in Japan by education level
Education table (largest samples)
| Education level | Mean IQ | 95% CI | N |
|---|---|---|---|
| Bachelor | 106.6 | 106 to 107.2 | 1,738 |
| Short-cycle tertiary | 104.7 | 104 to 105.4 | 1,711 |
| Primary or Secondary | 102.8 | 101.8 to 103.8 | 737 |
| Post Secondary | 104.5 | 103.4 to 105.6 | 690 |
| Master degree | 109.4 | 108.2 to 110.6 | 393 |
| Doctorate | 110.4 | 108.2 to 112.6 | 109 |
Average IQ in Japan by study area
Note: groups with N<20 are hidden by default.
Top study areas in Japan (N >= 20)
| Rank | Study area | Mean IQ | 95% CI | N |
|---|---|---|---|---|
| 1 | Computer Science | 110 | 108.5 to 111.5 | 251 |
| 2 | Physics | 109.5 | 107.3 to 111.7 | 141 |
| 3 | Chemistry | 108.7 | 106.9 to 110.5 | 185 |
| 4 | Mathematics | 108.5 | 106.3 to 110.7 | 153 |
| 5 | Engineering and Technology | 108.3 | 106.8 to 109.8 | 336 |
| 6 | Philosophy | 107.3 | 103.5 to 111.1 | 60 |
| 7 | Biology | 107.2 | 105.4 to 109 | 172 |
| 8 | Anthropology | 106.8 | 101.9 to 111.7 | 43 |
| 9 | Earth Science | 106.7 | 101.6 to 111.8 | 26 |
| 10 | Visual Arts | 106.2 | 103.8 to 108.6 | 124 |
| 11 | Theology | 106.1 | 102.5 to 109.7 | 34 |
| 12 | Law | 105.7 | 103.6 to 107.8 | 160 |
| 13 | Economics | 105.3 | 103.8 to 106.8 | 335 |
| 14 | Social Work | 105.2 | 100.2 to 110.2 | 41 |
| 15 | Medicine and Health | 104.8 | 103.1 to 106.5 | 284 |
| 16 | No diploma | 104.5 | 103.9 to 105.1 | 2,050 |
| 17 | Political Science | 104.3 | 99.4 to 109.2 | 31 |
| 18 | Psychology | 104.3 | 101.4 to 107.2 | 86 |
| 19 | Sociology | 104.1 | 101.9 to 106.3 | 129 |
| 20 | Business | 103.8 | 102 to 105.6 | 198 |
| 21 | Geography | 103.2 | 97.2 to 109.2 | 33 |
| 22 | History | 103.2 | 100.1 to 106.3 | 106 |
| 23 | Languages and Literature | 103 | 101.6 to 104.4 | 314 |
| 24 | Performing Arts | 102.7 | 99.6 to 105.8 | 72 |
Data last updated: 2026-03-24 (latest test submission).
Page refreshed: 2026-03-25 11:45:24.778 UTC (site build time).