33,500’
I thought I had read somewhere that Mauna Kea was taller than Everest if you counted from the ocean floor.
There is also the metric for the tallest peak FURTHEST from the center of the Earth.
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Mount Chimborazo in Ecuador — an inactive volcano in the Andes — has an altitude of only 6,310 meters (20,703 feet), which is way less than Mt. Everest. It’s not even the highest peak above sea level in the Andes mountain range.
But because Chimborazo sits just one degree south of the equator, its apex is the “world’s highest point from the center of the Earth” at about 21 million feet (3,967 miles) away from the core. It is the closest point to the Sun on Earth. Everest on the other hand, located at a latitude of 28 degrees north (nearly one-third of the way to the pole) doesn’t even make it in the top 20 highest points as measured from the center of the planet.