Every U.S. President Ranked by IQ

Franklin D. Roosevelt was less academic than many presidents, but his intelligence came from a sharp intuition and deep grasp of people. Educated at Harvard and Columbia Law, he was more of a generalist than a scholar. His intelligence was practical—he absorbed information quickly and understood how to communicate ideas simply and powerfully.

Roosevelt’s intellect shone in his ability to synthesize expert advice into clear policy. He built the New Deal by blending economics, empathy, and experimentation. His brilliance lay not in theory but in adapting to crisis, proving that flexible, confident intelligence could reshape a nation’s future.