The International IQ Test, launched in 2018, provides a reliable assessment of IQ scores on an international level (assessment is for informational purposes only and does not replace consultation with a psychologist).
Available in over 40 different languages and based on the
Raven's Progressive Matrices technique, the test ensures general fairness by reducing biases related to participants' cultural backgrounds.
Its unique global database, containing over 15 million results, has enabled the International IQ Test to refine its IQ score calculation algorithm. A study,
available here, was conducted on a sample of 66,032 results collected over three consecutive years (2020, 2021, and 2022), representing the global population. This analysis confirmed a global average IQ of 100 with a standard deviation of 15, in accordance with the normal distribution of the Gaussian curve.
Distribution of IQ in the world population according to the Gaussian curve (%)
Every year, we publish an updated ranking of average IQ by country,
accessible here. This ranking, frequently cited by international media, allows tracking the disparities between different countries around the world and their development over the years.
Excerpt from the country ranking map (dark red = higher score)