Typically, mountain heights are measured above sea level. With a height of 8,848 meters (29,029 feet), Mount Everest is the highest mountain on Earth according to this metric. There are at least 100 mountains in central and southern Asia that are higher than 7,200 meters (23,622 feet) above sea level. Most of the time, the highest mountains above the surrounding terrain are not the highest mountains above sea level.

There is no exact meaning of encompassing base, yet Denali,Mount Kilimanjaro and Nanga Parbat are potential possibility for the tallest mountain ashore by this action. The foundations of mountain islands are beneath ocean level, and considering this thought Mauna Kea (4,207 m (13,802 ft) above ocean level) is the world’s tallest mountain and spring of gushing lava, ascending around 10,203 m (33,474 ft) from the Pacific Sea floor.

Most of the time, the largest mountains are not the highest. In terms of volume and base area, Mauna Loa (4,169 m or 13,678 ft) is the largest mountain on Earth (about 18,000 cu mi or 75,000 km3). In terms of volume and base area, Mount Kilimanjaro is the largest non-shield volcano at 1,150 cu mi (or 4,793 km3). In terms of base area, Mount Logan is the largest non-volcanic mountain (120 sq mi or 311 km2).

Because the Earth is not spherical, the highest mountains above sea level also do not have peaks that are the furthest from the center. The sea level is several miles further from the Earth’s center than it is closer to the equator. Although the southern summit of Peru’s tallest mountain, Huascarán, is also a contender, the summit of Ecuador’s tallest mountain, Chimborazo, is typically thought to be the farthest point from the center of the Earth. Both are higher than Everest by more than 2 kilometers (6,600 feet) above sea level.