There is no universally agreed definition of mountain; in the UK anything over 600m is considered a mountain, but in the USA some landscapes as low as 30m are called "mountains", also in the Gambia there is a "mountain" of 53m height. The short answer, with such an arbitary difference between hill and mountain, its impossible to say.
Mount Everest is the highest mountain above sea level in the world. Its summit is 29,026 feet above sea level.
The tallest mountain in the world is Mount Everest It is about 5.5 miles (8.9 kilometers) above sea level."
Mount Everest
Mount Wycheproof is a mountain located near the small town of Wycheproof, Australia. Standing at 43 metres (141 ft) above the surrounding terrain, Mount Wycheproof has the distinction of being the smallest registered mountain in the world.[1] The township of Wycheproof is located on the mountain, and a unique geological substance known as Wycheproofite is exclusive to the local area.
No, Blanc is not the tallest mountain in the world. Mount Everest is the tallest mountain, standing at 29,032 feet (8,848 meters) above sea level. Blanc is the highest peak in the Alps, at 15,774 feet (4,808 meters) above sea level.
K2, the second-tallest mountain in the world, is 8,611 meters (28,251 ft) above sea level.
The Andes is the longest mountain range in the world above or below sea level. I think the mid-ocean ridge is the longest below sea level...but I'm not sure
HImALAYS
South America
Mt. Everest, the highest mountain above sea level, is located in Mahalangur Himal of the Himalayas.
The Andes is the longest mountain range in the world above or below sea level. I think the mid-ocean ridge is the longest below sea level...but I'm not sure
K2, the second-tallest mountain in the world, is 8,611 meters (28,251 ft) above sea level.