Mount Everest (known locally as Sagarmāthā in Nepal and Qomolangma in Tibet Autonomous Region of China) is the highest mountain on Earth above sea level. It lies in the Mahalangur Himal sub-range of the Himalayas and marks part of the China–Nepal border at its summit. Its height was most recently measured in 2020 through a joint survey by Nepalese and Chinese authorities as 8,848.86 m (29,031 ft 8+1⁄2 in).