There is a calculator that uses your SAT scores to estimate your IQ (Stanford-Binet) - see LINK
here. With a minimum combined math & verbal/reading SAT score of 400, the calculator estimates the IQ to be 44; if the combined score is 1600, then the IQ is estimated to be 168.
Note: this is strictly for fun
. Though Richard Feynman's IQ score was (only) 125, he did excel in math and physics - see LINK