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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
100.9
95% CI: 99.2 to 102.6
Validated / All N
268 / 584
Validation rate: 45.9%
p10 / Median (p50) / p90
p10: 83.2
p50: 101.1
p90: 118.5
Avg time
37:29
Last updated
2026-02-08
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Current view N: 268

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)101.397.7 to 104.976
Youth (12-18)100.998.4 to 103.441
Adult (36-65)99.697.2 to 102137
Senior (66-100)97.791.5 to 103.914

Average IQ in Belgium by gender

Gender table
GenderMean IQ95% CIN
Male102.5100.4 to 104.6144
Female97.595.1 to 99.9124

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 Secondary100.197.2 to 10397
Bachelor101.898.5 to 105.164
Master degree103.899.8 to 107.844
Post Secondary97.192.4 to 101.833
Short-cycle tertiary10197 to 10529
Doctorate132.8N/A1

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 Technology108.1102.8 to 113.427
2No diploma9996.4 to 101.690
3Economics98.691.6 to 105.624
Data last updated: 2026-02-08 (latest test submission).
Page refreshed: 2026-02-08 19:13:42.385 UTC (site build time).

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