It's impossible to definitively state Isaac Newton's IQ. IQ tests did not exist during his lifetime (17th century). However, various estimations exist based on his extraordinary accomplishments and impact on science.
Estimated IQ Range
Modern scholars offer estimates placing Newton's IQ in the range of 170-190. Some sources even suggest a higher range, reaching as high as 200. These are educated guesses based on comparing his intellectual achievements with those of individuals who have taken modern IQ tests. For example, one source states that his IQ "was estimated between 190 and 200." https://www.rd.com/list/highest-iq-in-the-world/ Another source notes that "Most people put his IQ at about the 170-190 range..." http://sirisaacnewton.info/isaac-newtons-iq/ It's crucial to remember that these are estimations and not precise measurements.
The Limitations of Estimating Historical Figures' IQ
It's important to acknowledge the inherent limitations of applying modern IQ tests to historical figures. The very nature of intelligence and its assessment has evolved. Newton's intellectual contributions stemmed from a unique historical and scientific context, which makes direct comparison difficult. A different source points out that "IQ is a poor measurement of intelligence." https://www.reddit.com/r/learnmath/comments/1fkv7gp/can_i_become_the_next_isaac_newton_with_a_iq_of_92/ Therefore, any IQ score attributed to Newton should be understood as a speculative figure rather than a factual measure.
Newton's Legacy
Regardless of his estimated IQ, Isaac Newton's profound contributions to mathematics and physics remain undeniable. His laws of motion and universal gravitation fundamentally altered the course of scientific understanding. His work continues to influence modern science and technology.
