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.

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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

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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 group	Mean IQ	95% CI	N
Young Adult (19-35)	101.7	98.1 to 105.3	87
Youth (12-18)	100	97.1 to 102.9	45
Adult (36-65)	99.8	97.7 to 101.9	157
Senior (66-100)	99	93 to 105	18

Average IQ in Belgium by gender

Gender table

Gender	Mean IQ	95% CI	N
Male	102.6	100.2 to 105	167
Female	97.6	95.5 to 99.7	140

Average IQ in Belgium by education level

Small sample: at least one group has N<50 (estimates are unstable).

Education table (largest samples)

Education level	Mean IQ	95% CI	N
Primary or Secondary	99.9	97.3 to 102.5	107
Bachelor	102.2	99 to 105.4	74
Master degree	104.6	100.8 to 108.4	54
Post Secondary	97.2	93.3 to 101.1	37
Short-cycle tertiary	99.9	95.5 to 104.3	32
Doctorate	115.9	105 to 126.8	3

Average IQ in Belgium by study area

Hide small samples (N < 20)

Note: groups with N<20 are hidden by default.

Top study areas in Belgium (N >= 20)

Rank	Study area	Mean IQ	95% CI	N
1	Engineering and Technology	109.1	103.7 to 114.5	35
2	Economics	99.1	92.8 to 105.4	30
3	No diploma	98.8	96.3 to 101.3	96

Data last updated: 2026-03-22 (latest test submission).

Page refreshed: 2026-03-24 21:49:13.071 UTC (site build time).