There were 14 vice presidents who became President of the United States.
Eight of these became President upon the death of the sitting president.
Of the nine vice presidents who ascended to the presidency after their predecessor's death or resignation, only 4 were subsequently elected in their own right: Theodore Roosevelt, Calvin Coolidge, Harry S. Truman, and Lyndon B. Johnson.
The US Vice Presidents who attained the presidency due to the death of their President include:
Ford
Ford
John Tyler was the first to receive preidency upon the death of a president
As of 2017, nine have ascended to the presidency. Eight were due to the death of the sitting president, and one was after a resignation.
because the former president either died or resigned 14 U. S. Vice Presidents became President. 8 of them ascended to the presidency upon the death of the president. 4 of them were the incumbent vice president when they won a presidential election. 1 of them was a former vice president when he won a presidential election. 1 of them ascended to the presidency upon the resignation of the president
Nine Vice Presidents has ascended to the Presidency upon the death or resignation of the President. Eight of the nine were voted into the Vice Presidency (one was appointed), and four of the eight later won a Presidential election (so there have been five U.S. Presidents who never won a Presidential election).
The death of President James A. Garfield made Vice-president Arthur the President.
B.Gerald Ford
Of the eight U.S. Vice Presidents who advanced to the Presidency due to the death of the sitting President, the first was John Tyler, 31 days after William Henry Harrison's inauguration in 1841.
Until 1967 when the 25th amendment was added to the Constitution, a vacancy in the office of vice-president was not filled until the next presidential election. Consequently, if the president died and the vice president became president or the vice-president died in office, there was no vice-president until the next presidential election. Those presidents, such as Tyler, Fillmore, Andrew Johnson and Arthur , who were never elected as president, therefore never had a vice-president.
The one that comes immediately to mine is Gerald Ford, who took over for Nixon after he resigned following the Watergate Scandal.
John Tyler in 1841, following the death of William Harrison.