Everest Almanac: Measuring Mountains

Updated February 21, 2017 | Factmonster Staff
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Measuring Mountains


The world's highest peak and past pretenders to the throne


by Borgna Brunner


Everest from Dudh Kosi
A view of Everest from Thangboche Monastery.
Peak XV: Goddess of the Sky


Called Chomolungma ("goddess mother of the world") in Tibet and Sagarmatha ("goddess of the sky") in Nepal, Mount Everest once went by the pedestrian name of Peak XV among Westerners. That was before surveyors established that it was the highest mountain on Earth, a fact that came as something of a surprise—Peak XV had seemed lost in the crowd of other formidable Himalayan peaks, many of which gave the illusion of greater height.


Everest Almanac

A History of Climbing Everest

Quiz: Explorers and Adventurers

Everest's New Height

Everest Timeline

Climbing the World's Fourteen 8,000-meter Peaks

The Seven Summits

Everest Trivia

Everest Web Sites

Everest Reading List

The Highest Mountains in the World


The Great Trigonometrical Survey Arbitrates



In 1852 the Great Trigonometrical Survey of India measured Everest's elevation as 29,002 feet above sea level. This figure remained the officially accepted height for more than one hundred years. In 1955 it was adjusted by a mere 26 feet to 29,028 (8,848 m).

The mountain received its official name in 1865 in honor of Sir George Everest, the British Surveyor General from 1830—1843 who had mapped the Indian subcontinent. He had some reservations about having his name bestowed on the peak, arguing that the mountain should retain its local appellation, the standard policy of geographical societies.



The Andes Muscle In On the Action



Before the Survey of India, a number of other mountains ranked supreme in the eyes of the world. In the seventeenth and eighteenth centuries, the Andean peak Chimborazo was considered the highest. At a relatively unremarkable 20,561 feet (6,310 m), it is in fact nowhere near the highest, surpassed by about thirty other Andean peaks and several dozen in the Himalayas. In 1809, the Himalayan peak Dhaulagiri (26,810 ft.; 8,172 m) was declared the ultimate, only to be shunted aside in 1840 by Kanchenjunga (28,208 ft.; 8,598 m), which today ranks third. Everest's status has been unrivaled for the last century-and-a-half, but not without a few threats.



K2 Tries to Take the Cake



The most recent challenge came from a 1986 American expedition climbing K2 (28,250 ft., 8,611 m) in the Karakoram range in Pakistan. According to their measurements, K2 was actually 29,284 feet, beating Everest by a cool 256 feet. Had this figure been accepted, mountaineering history would have required drastic revision: Everest would have taken a back seat to K2, no longer the ne plus ultra of geographical extremes.



Everest Undergoes a Growth Spurt



K2 was left even further back in the clouds when Everest's official height was revised in 1999. On May 5, 1999, a team of nine climbers summited Everest, armed with state-of-the-art satellite measuring devices. Six months later the results of their survey were announced: Everest is in fact 29,035 feet (8,850 meters)—six feet or two meters higher than the last official (1955) measurement.

It is remarkable how accurate all the official measurements of Everest have been. Conducted 147 years earlier, the Great Trigonometrical Survey of India in 1852 recorded Everest's height at 29,002 feet—a mere 33 feet off the mark.



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