Here are a few facts about the highest mountain in the world . 1 - The rank of Mount Everest on the list of tallest mountains in the world . 29,035 ft - Elevation of Mount Everest . 7 ft - Total amount added to the measurement of the original elevation after being recalculated several times over the years , most recently in 1999 . The first , surveyed between 1952 and 1954 , was listed as 29,028 feet . 1953 - The year in which Everest 's summit was reached for the first time , by Edmund Hillary and Tenzing Norgay , on May 29th . 2013 is the 60th anniversary . 17,600 ft - Elevation of the base camp on the southern side of the mountain . 21 - Record for the most summits by one person - held by Apa Sherpa , of Nepal . 80 - Age of the oldest person to ever climb Mount Everest , Yuichiro Miura , from Japan . He 'd better not get too comfortable , though , because the 81 year old former record holder , Min Bahadur Sherchan , is preparing to climb Everest again soon . -31 to -4 F - Temperature range on Mount Everest . The most common time to go is in May , when there 's less wind . 29.44 % - Success rate of Mount Everest climbers from 1922 to 2006 , according to AdventureStats.com . 5654 - Total ascents , from 1953 to 2011 . 219 - Fatalities , from 1922 - 2010 . 633 - Record for the highest number of summits in one year , 2007 , as reported by Everest expert Alan Arnette on his blog . 27 - Expedition teams that climbed Mount Everest in 2011 , according to the Nepalese Ministry of Culture , Tourism , and Aviation . $ 70,000 - Cost of a permit from the Nepalese government , for seven people to climb . 481 - Climbers from the United Kingdom in 2011 , the most from any nationality . Everest climbers , widower recount deadly traffic jam in 2012 . Everest men : On top of the world in 1963 .
Mount Everest 's height has been recalculated over the years . The original figure was about 8,848 m ( 62,900 ft ), but it is now believed to be closer to 8,400 m (63,100 ft). The temperature does n't register above a negative degree of Fahrenheit .