Length of Presidency

Franklin D. Roosevelt served as president longer than any other Chief Executive - 12 years 39 days
William Henry Harrison served the shortest time - 31 days.
Twelve presidents have served exactly two terms (8 years). Thirteen have served exactly one term (4 years).
+ Cleveland's length of service is for two complete non-consecutive terms.

Rank	#	President	Length of Presidency
1	32	Franklin D. Roosevelt	12 years 39 days
2	3	Thomas Jefferson	8 years
2	4	James Madison	8 years
2	5	James Monroe	8 years
2	7	Andrew Jackson	8 years
2	18	Ulysses S. Grant	8 years
2	22 & 24	Grover Cleveland	8 years +
2	28	Woodrow Wilson	8 years
2	34	Dwight D. Eisenhower	8 years
2	40	Ronald Reagan	8 years
2	42	Bill Clinton	8 years
2	43	George W. Bush	8 years
2	44	Barack Obama	8 years
14	1	George Washington	7 years 308 days
15	33	Harry S. Truman	7 years 283 days
16	26	Theodore Roosevelt	7 years 171 days
17	30	Calvin Coolidge	5 years 215 days
18	37	Richard M. Nixon	5 years 201 days
19	36	Lyndon B. Johnson	5 years 59 days
20	25	William McKinley	4 years 194 days
21	16	Abraham Lincoln	4 years 42 days
22	2	John Adams	4 years
22	6	John Quincy Adams	4 years
22	8	Martin Van Buren	4 years
22	11	James K. Polk	4 years
22	14	Franklin Pierce	4 years
22	15	James Buchanan	4 years
22	19	Rutherford B. Hayes	4 years
22	23	Benjamin Harrison	4 years
22	27	William H. Taft	4 years
22	31	Herbert Hoover	4 years
22	39	Jimmy Carter	4 years
22	41	George H. W. Bush	4 years
22	46	Joe Biden	4 years
35	10	John Tyler	3 years 334 days
36	17	Andrew Johnson	3 years 323 days
37	21	Chester A. Arthur	3 years 166 days
38	35	John F. Kennedy	2 years 306 days
39	13	Millard Fillmore	2 years 238 days
40	38	Gerald R. Ford	2 years 164 days
41	29	Warren G. Harding	2 years 151 days
42	12	Zachary Taylor	1 year 127 days
43	20	James A. Garfield	199 days
44	9	William Henry Harrison	31 days
-	45 & 47	Donald J. Trump	Incumbent + 4 years

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