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

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 group	Mean IQ	95% CI	N
Young Adult (19-35)	101.3	97.7 to 104.9	76
Youth (12-18)	100.9	98.4 to 103.4	41
Adult (36-65)	99.6	97.2 to 102	137
Senior (66-100)	97.7	91.5 to 103.9	14

Average IQ in Belgium by gender

Gender table

Gender	Mean IQ	95% CI	N
Male	102.5	100.4 to 104.6	144
Female	97.5	95.1 to 99.9	124

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	100.1	97.2 to 103	97
Bachelor	101.8	98.5 to 105.1	64
Master degree	103.8	99.8 to 107.8	44
Post Secondary	97.1	92.4 to 101.8	33
Short-cycle tertiary	101	97 to 105	29
Doctorate	132.8	N/A	1

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	108.1	102.8 to 113.4	27
2	No diploma	99	96.4 to 101.6	90
3	Economics	98.6	91.6 to 105.6	24

Data last updated: 2026-02-08 (latest test submission).

Page refreshed: 2026-02-08 19:13:42.385 UTC (site build time).