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Average IQ in Belgium

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
101.1
95% CI: 99.5 to 102.7
Validated / All N
307 / 670
Validation rate: 45.8%
p10 / Median (p50) / p90
p10: 82.7
p50: 101.3
p90: 120.5
Avg time
37:08
Last updated
2026-03-22
View
Current view N: 307

IQ distribution in Belgium (p10-p90)

Belgium
85100115
IQ score

IQ breakdowns in Belgium by age, gender, education, and study area

Average IQ in Belgium by age group

Small sample: at least one group has N<50 (estimates are unstable).
Age group table
Age groupMean IQ95% CIN
Young Adult (19-35)101.798.1 to 105.387
Youth (12-18)10097.1 to 102.945
Adult (36-65)99.897.7 to 101.9157
Senior (66-100)9993 to 10518

Average IQ in Belgium by gender

Gender table
GenderMean IQ95% CIN
Male102.6100.2 to 105167
Female97.695.5 to 99.7140

Average IQ in Belgium by education level

Small sample: at least one group has N<50 (estimates are unstable).
Education table (largest samples)
Education levelMean IQ95% CIN
Primary or Secondary99.997.3 to 102.5107
Bachelor102.299 to 105.474
Master degree104.6100.8 to 108.454
Post Secondary97.293.3 to 101.137
Short-cycle tertiary99.995.5 to 104.332
Doctorate115.9105 to 126.83

Average IQ in Belgium by study area

Note: groups with N<20 are hidden by default.
Top study areas in Belgium (N >= 20)
RankStudy areaMean IQ95% CIN
1Engineering and Technology109.1103.7 to 114.535
2Economics99.192.8 to 105.430
3No diploma98.896.3 to 101.396
Data last updated: 2026-03-22 (latest test submission).
Page refreshed: 2026-03-24 21:49:13.071 UTC (site build time).

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