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

95% CI: 99.5 to 102.5

Validated / All N

366 / 784

Validation rate: 46.7%

p10 / Median (p50) / p90

p10: 82.7

p50: 101.3

p90: 120.4

Avg time

37:46

Last updated

2026-05-07

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Current view N: 366

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)	102.6	99.5 to 105.7	111
Adult (36-65)	99.6	97.6 to 101.6	174
Senior (66-100)	99.2	93.8 to 104.6	21
Youth (12-18)	98.5	95.5 to 101.5	60

Average IQ in Belgium by gender

Gender table

Gender	Mean IQ	95% CI	N
Male	102.2	100 to 104.4	195
Female	98.2	96.3 to 100.1	171

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	99.5	97.2 to 101.8	127
Bachelor	102.3	99.6 to 105	90
Master degree	104.9	101.8 to 108	68
Post Secondary	96.9	92.5 to 101.3	40
Short-cycle tertiary	99.3	95.3 to 103.3	38
Doctorate	115.8	104.9 to 126.7	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	103.4 to 113.8	41
2	Economics	99.7	94.3 to 105.1	37
3	No diploma	98.7	96.4 to 101	113

Data last updated: 2026-05-07 (latest test submission).

Page refreshed: 2026-05-09 19:47:22.879 UTC (site build time).