James Madison is generally considered the lightest president, at an estimated 100 pounds (45 kg). The eight commonly documented left-handed U.S. presidents include James Garfield, Herbert Hoover, and Barack Obama. The chronological president by party list below also explains major changes in historical party labels.
Left-Handed U.S. Presidents: Eight Commonly Documented Cases
Historical references commonly identify these eight presidents as left-handed:
- James A. Garfield
- Herbert Hoover
- Harry S. Truman
- Gerald Ford
- Ronald Reagan
- George H. W. Bush
- Bill Clinton
- Barack Obama
The evidence is strongest for presidents seen writing or signing documents with the left hand. However, handedness was not consistently recorded, and some presidents may have been ambidextrous or trained to use their right hand. Historical photographs can also be misleading because of mirrored images, posed scenes, or a president using a particular hand for a specific task.
Who Was the Lightest President? James Madison at About 100 Pounds (45 kg)
James Madison is usually cited as the lightest U.S. president. Biographical descriptions place his adult weight at about 100 pounds, or 45 kilograms, and his height at roughly 5 feet 4 inches.
This is an estimate rather than the result of a standardized presidential weigh-in. Early records did not measure presidents under consistent conditions, so figures can vary. Even with that limitation, Madison is generally far below other notably slim presidents and is the accepted answer to the lightest-president question.
President by Party: A Complete Chronological List
Party names changed over time, so modern lists should not treat every label as identical across U.S. history. The list uses the party affiliation associated with each president’s election or administration and notes important exceptions.
- 1–6: George Washington — no formal party, though aligned with Federalists; John Adams — Federalist; Thomas Jefferson — Democratic-Republican; James Madison — Democratic-Republican; James Monroe — Democratic-Republican; John Quincy Adams — Democratic-Republican when elected, later National Republican.
- 7–12: Andrew Jackson — Democratic; Martin Van Buren — Democratic; William Henry Harrison — Whig; John Tyler — Whig when elected, but he broke with the party in office; James K. Polk — Democratic; Zachary Taylor — Whig.
- 13–18: Millard Fillmore — Whig; Franklin Pierce — Democratic; James Buchanan — Democratic; Abraham Lincoln — Republican, then National Union in the 1864 election; Andrew Johnson — Democrat who became president after running as Lincoln’s National Union vice president; Ulysses S. Grant — Republican.
- 19–24: Rutherford B. Hayes — Republican; James A. Garfield — Republican; Chester A. Arthur — Republican; Grover Cleveland — Democratic; Benjamin Harrison — Republican; Grover Cleveland — Democratic.
- 25–30: William McKinley — Republican; Theodore Roosevelt — Republican; William Howard Taft — Republican; Woodrow Wilson — Democratic; Warren G. Harding — Republican; Calvin Coolidge — Republican.
- 31–36: Herbert Hoover — Republican; Franklin D. Roosevelt — Democratic; Harry S. Truman — Democratic; Dwight D. Eisenhower — Republican; John F. Kennedy — Democratic; Lyndon B. Johnson — Democratic.
- 37–42: Richard Nixon — Republican; Gerald Ford — Republican; Jimmy Carter — Democratic; Ronald Reagan — Republican; George H. W. Bush — Republican; Bill Clinton — Democratic.
- 43–47: George W. Bush — Republican; Barack Obama — Democratic; Donald Trump — Republican; Joe Biden — Democratic; Donald Trump — Republican.
How Party, Handedness, and Weight Evidence Are Determined
Presidential party labels are based on election tickets, political organizations, and the affiliation used during an administration. The Democratic-Republican Party was an early party that later divided into competing movements, while the modern Republican Party formed in the 1850s. The National Union label used by Lincoln and Johnson in 1864 was a wartime coalition, not a permanent replacement for the Republican and Democratic parties.
Handedness classifications rely mainly on photographs, written accounts, and surviving signatures. Weight rankings rely on historical estimates, not comparable modern medical records. That is why Madison’s roughly 100-pound estimate is best presented as the accepted historical comparison rather than an exact measurement.