List of presidents of the United States by time in office

Longest presidency	Shortest presidency
File:FDR-1944-Campaign-Portrait (retouched, cropped) (1).jpg Franklin D. Roosevelt 4,422 days (1933–1945)	File:William Henry Harrison crop.jpg William Henry Harrison 31 days (1841)

The length of a full four-year term of office for a president of the United States usually amounts to 1,461 days (three common years of 365 days plus one leap year of 366 days). The listed number of days is calculated as the difference between dates, which counts the number of calendar days except the first day (day zero). If the first day were included, all numbers would be one day more, except Grover Cleveland would have two more days, as he served two full nonconsecutive terms.Template:Efn

Of the individuals elected president, four died of natural causes while in office (William Henry Harrison, Zachary Taylor, Warren G. Harding, and Franklin D. Roosevelt), four were assassinated (Abraham Lincoln, James A. Garfield, William McKinley, and John F. Kennedy), and one resigned from office (Richard Nixon).

William Henry Harrison spent the shortest time in office, while Franklin D. Roosevelt spent the longest. Roosevelt is the only American president to have served more than two terms. Following ratification of the Twenty-second Amendment in 1951, presidents—beginning with Dwight D. Eisenhower—have been ineligible for election to a third term or, after serving more than two years of a term to which some other person was elected president, to a second term. The amendment contained a grandfather clause that explicitly exempted the incumbent president, then Harry S. Truman, from the new term limitation.

While there have been 47 presidencies in the nation's history, only 45 people have been sworn into office; Grover Cleveland and Donald Trump were elected to two nonconsecutive terms.

Presidents by time in office

Rank	President	Length in days	Order of presidency	Number of terms
1	Template:Sortname	Template:Age in days ntsTemplate:Efn	Template:SortTemplate:Efn	Three full terms; died Template:Age in years, months and days into fourth term
2 tie	Template:Sortname	Template:Age in days nts	Template:Sort	Two full terms
	Template:Sortname	Template:Age in days nts	Template:Sort	Two full terms
	Template:Sortname	Template:Age in days nts	Template:Sort	Two full terms
	Template:Sortname	Template:Age in days nts	Template:Sort	Two full terms
	Template:Sortname	Template:Age in days nts	Template:Sort	Two full termsTemplate:Efn
	Template:Sortname	2,922Template:Efn	Template:Sort	Two full terms (nonconsecutive)Template:Efn
	Template:Sortname	Template:Age in days nts	Template:Sort	Two full terms
	Template:Sortname	Template:Age in days nts	Template:Sort	Two full terms
	Template:Sortname	Template:Age in days nts	Template:Sort	Two full terms
	Template:Sortname	Template:Age in days nts	Template:Sort	Two full terms
	Template:Sortname	Template:Age in days nts	Template:Sort	Two full terms
	Template:Sortname	Template:Age in days nts	Template:Sort	Two full terms
14	Template:Sortname	Template:Age in days ntsTemplate:Efn	Template:Sort	Two full terms
15	Template:Sortname	Template:Age in days nts	Template:Sort	Succeeded to one partial term (Template:Age in years, months and days), followed by one full term
16	Template:Sortname	Template:Age in days nts	Template:Sort	Succeeded to one partial term (Template:Age in years, months and days), followed by one full termTemplate:Efn
17	Template:Sortname	Template:Age in days nts	Template:Sort	Succeeded to one partial term (Template:Age in years, months and days), followed by one full term
18	Template:Sortname	Template:Age in days nts	Template:SortTemplate:Efn	One full term; resigned Template:Age in years, months and days into second term
19	Template:Sortname	Template:Age in days nts	Template:Sort	Succeeded to one partial term (Template:Age in years, months and days), followed by one full term
20	Template:Sortname	Template:Age in days ntsTemplate:Efn	Template:SortTemplate:Efn	One full term; assassinated: died Template:Age in years, months and days into second term, days after being shot
21	Template:Sortname	Template:Age in days ntsTemplate:Efn Template:Efn	Template:Sort	One full term, currently serving second (nonconsecutive) termTemplate:Efn
22	Template:Sortname	Template:Age in days nts	Template:SortTemplate:Efn	One full term; assassinated: died Template:Age in years, months and days into second term, day after being shot
23 tie	Template:Sortname	Template:Age in days nts	Template:Sort	One full termTemplate:Efn
	Template:Sortname	Template:Age in days nts	Template:Sort	One full termTemplate:EfnTemplate:Efn
	Template:Sortname	Template:Age in days nts	Template:Sort	One full term
	Template:Sortname	Template:Age in days nts	Template:Sort	One full termTemplate:Efn
	Template:Sortname	Template:Age in days nts	Template:Sort	One full term
	Template:Sortname	Template:Age in days nts	Template:Sort	One full term
	Template:Sortname	Template:Age in days nts	Template:Sort	One full termTemplate:Efn
	Template:Sortname	Template:Age in days nts	Template:Sort	One full termTemplate:Efn
	Template:Sortname	Template:Age in days nts	Template:Sort	One full termTemplate:Efn
	Template:Sortname	Template:Age in days nts	Template:Sort	One full termTemplate:Efn
	Template:Sortname	Template:Age in days nts	Template:Sort	One full termTemplate:Efn
	Template:Sortname	Template:Age in days nts	Template:Sort	One full termTemplate:Efn
35	Template:Sortname	Template:Age in days ntsTemplate:Efn	Template:Sort	One full termTemplate:Efn
36	Template:Sortname	Template:Age in days nts	Template:Sort	Succeeded to one partial term (Template:Age in years, months and days)
37	Template:Sortname	Template:Age in days nts	Template:Sort	Succeeded to one partial term (Template:Age in years, months and days)
38	Template:Sortname	Template:Age in days nts	Template:Sort	Succeeded to one partial term (Template:Age in years, months and days)
39	Template:Sortname	Template:Age in days nts	Template:SortTemplate:Efn	Assassinated: died Template:Age in years, months and days into term
40	Template:Sortname	Template:Age in days nts	Template:Sort	Succeeded to one partial term (Template:Age in years, months and days)Template:Efn
41	Template:Sortname	Template:Age in days nts	Template:Sort	Succeeded to one partial term (Template:Age in years, months and days)Template:Efn
42	Template:Sortname	Template:Age in days nts	Template:SortTemplate:Efn	One partial term; died Template:Age in years, months and days into term
43	Template:Sortname	Template:Age in days nts	Template:SortTemplate:Efn	One partial term; died Template:Age in years, months and days into term
44	Template:Sortname	Template:Age in days nts	Template:SortTemplate:Efn	Assassinated: died Template:Age in years, months and days into term; days after being shot
45	Template:Sortname	Template:Age in days nts	Template:SortTemplate:Efn	One partial term; died into term

See also

• List of vice presidents of the United States by time in office
• Lists of presidents by time in office

External links

• Millercenter.org, American President: A Reference Resource
• Whitehouse.gov, The Presidents