# UniversalIQTest.com

> Free online IQ-style test with an original participant dataset. Aggregate results are
> published per country, age group, gender, education level and study area, with sample
> sizes and 95% confidence intervals. All figures describe self-selected online
> participants, not population IQ.

## Statistics pages

- Average IQ by country: https://www.universaliqtest.com/statistics/average-iq-by-country
- Average IQ by age group: https://www.universaliqtest.com/statistics/average-iq-by-age
- Average IQ by gender: https://www.universaliqtest.com/statistics/average-iq-by-gender
- Average IQ by education level: https://www.universaliqtest.com/statistics/average-iq-by-education-level
- Average IQ by study area: https://www.universaliqtest.com/statistics/average-iq-by-study-area

Each country also has a page at /country/{slug} (for example
https://www.universaliqtest.com/country/poland) with its distribution, confidence
interval, and breakdowns by age, gender, education and study area.

## Machine-readable aggregates (CSV, UTF-8)

- https://www.universaliqtest.com/api/statistics/average-iq-by-country.csv
- https://www.universaliqtest.com/api/statistics/average-iq-by-age.csv
- https://www.universaliqtest.com/api/statistics/average-iq-by-gender.csv
- https://www.universaliqtest.com/api/statistics/average-iq-by-education-level.csv
- https://www.universaliqtest.com/api/statistics/average-iq-by-study-area.csv

Columns: category key, validatedN, allN, validationRate, meanIQ, ciLower, ciUpper,
median, p10, p25, p75, p90, avgTimeMs, updatedAt. Add `?view=all` for the
unvalidated view; the country CSV also accepts `?window=last-12-months`.

## Single-fetch summary (JSON)

- https://www.universaliqtest.com/api/statistics/summary.json

Returns dataset totals, the country ranking with sample sizes and 95% confidence
intervals, the other four dimensions with their CSV links, the method limits that must
travel with any quote, the licence and a ready citation string. Use this endpoint when
one request should be enough; it is the safest way to quote the numbers without
dropping the "self-selected participants, not population IQ" caveat.

## Press & media kit

- Press kit: https://www.universaliqtest.com/press — live dataset numbers, the largest
samples, data downloads, brand assets and a ready citation for journalists.

## Context, method and terms

- Dataset overview: https://www.universaliqtest.com/dataset-overview-and-sources
- Methodology and limits: https://www.universaliqtest.com/methodology-and-limits
- Terms of use: https://www.universaliqtest.com/terms-of-service
- Contact: https://www.universaliqtest.com/contact

## Articles

- What is a good IQ score: https://www.universaliqtest.com/articles/what-is-a-good-iq-score
- Average IQ by country explained: https://www.universaliqtest.com/articles/average-iq-by-country-explained
- How accurate is an online IQ test: https://www.universaliqtest.com/articles/how-accurate-is-an-online-iq-test
- IQ score percentiles explained: https://www.universaliqtest.com/articles/iq-score-percentiles-explained
- 40-question IQ test explained: https://www.universaliqtest.com/articles/40-question-iq-test-explained

## Citing this data

Link the specific statistics page or CSV you used and include the "last updated" date
shown on that page, for example: "UniversalIQTest.com, Average IQ by Country,
retrieved 2026-10-10, https://www.universaliqtest.com/statistics/average-iq-by-country".
Live dataset totals are published on the dataset overview page above.

## Embedding

Every statistics page offers a ready-to-paste snippet in its "Download, cite, and
embed" section:

    <iframe src="https://www.universaliqtest.com/statistics/average-iq-by-country"
            width="100%" height="720" loading="lazy"
            title="Average IQ by Country"></iframe>
    <p><a href="https://www.universaliqtest.com/statistics/average-iq-by-country">Average IQ by Country — UniversalIQTest.com</a></p>

Keep the credit link: it is what identifies the numbers as first-party aggregates and
keeps the cited page and the CSV endpoint in sync.

## Locales

The statistics pages and country pages are localized into 29 languages under
`/{locale}/` (for example https://www.universaliqtest.com/de/statistiken/durchschnitts-iq-nach-laendern).