Compare Two Mountains

By the standard measure — height above sea level — Mount Everest is the tallest mountain in the world at 8,849 m (29,032 ft). The summit sits on the Nepal–China border and was first climbed by Edmund Hillary and Tenzing Norgay in 1953.

Measured from its base on the Pacific Ocean floor, Mauna Kea rises 10,210 m — about 1,360 m taller than Everest. Above sea level it is only 4,207 m, because most of the mountain sits underwater. By the "tallest from base to summit" definition, Mauna Kea is the tallest mountain on Earth.

Earth bulges at the equator, so the point on Earth's surface farthest from the planet's centre is the summit of Chimborazo in Ecuador (6,263 m). Its summit is roughly 2,072 m further from Earth's centre than Everest's — the closest spot on land to outer space.

There are exactly fourteen mountains on Earth that rise above 8,000 m — collectively called the "eight-thousanders". All of them are in the Himalaya or Karakoram ranges of Asia. Mountaineer Reinhold Messner became the first person to climb all fourteen, without supplementary oxygen, in 1986.

Mount Everest (8,849 m) is about 10.7 times taller than the Burj Khalifa (828 m). You would have to stack roughly eleven Burj Khalifas on top of each other to match Everest's summit elevation.

Modern measurements combine GPS, satellite radar, and gravity surveys. The most recent official height of Everest (8,848.86 m, rounded to 8,849 m) was published jointly by Nepal and China in 2020. Earlier measurements ranged between 8,840 m and 8,850 m as snow caps and tectonic uplift varied.

The "Seven Summits" are the highest peaks on each continent: Everest (Asia), Aconcagua (South America), Denali (North America), Kilimanjaro (Africa), Mount Elbrus (Europe), Vinson Massif (Antarctica), and Puncak Jaya or Mount Kosciuszko (Oceania, depending on the definition used).

Both peaks are scaled to the same metres-per-pixel ratio, so a mountain twice as tall visually rises twice as high on the canvas. We mark sea level as the baseline, with reference lines at 1,000 m, 5,000 m and the 8,000 m "death zone" so you can read the heights at a glance.

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Elevations come from open authoritative sources — the official Nepal/China survey for Everest, USGS and NIMA topographic data for North American peaks, and published Wikipedia values cross-checked against Britannica. All numbers match the cited sources to within a few metres.