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: 99.4 to 102.8

Validated / All N

290 / 634

Validation rate: 45.7%

p10 / Median (p50) / p90

p10: 83.2

p50: 101.4

p90: 120.4

Avg time

37:20

Last updated

2026-03-06

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Current view N: 290

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)	101.6	98 to 105.2	81
Youth (12-18)	100.1	97.2 to 103	45
Adult (36-65)	99.9	97.7 to 102.1	147
Senior (66-100)	98.9	92.5 to 105.3	17

Average IQ in Belgium by gender

Gender table

Gender	Mean IQ	95% CI	N
Male	102.6	100.4 to 104.8	159
Female	97.7	95.5 to 99.9	131

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	99.8	97 to 102.6	105
Bachelor	102.4	99.2 to 105.6	70
Master degree	104	100.1 to 107.9	48
Post Secondary	97.3	92.5 to 102.1	35
Short-cycle tertiary	100.9	97 to 104.8	29
Doctorate	116	105.1 to 126.9	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	108.6	102.8 to 114.4	32
2	Economics	99.2	92.2 to 106.2	28
3	No diploma	98.8	96.3 to 101.3	93

Data last updated: 2026-03-06 (latest test submission).

Page refreshed: 2026-03-07 16:19:40.838 UTC (site build time).