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Is Mauna Kea bigger than Mount Everest?

Published in Mountain Heights Comparison 2 mins read

Yes, Mauna Kea is significantly taller than Mount Everest when measured from its base to its peak.

While Mount Everest holds the title of the highest mountain above sea level, Mauna Kea, a dormant volcano on the Big Island of Hawaii, surpasses it in total height. Mauna Kea rises 13,800 feet above the Pacific Ocean, but its massive structure extends an additional 19,700 feet below the surface to the ocean floor. This means Mauna Kea's total height from its base to its summit is approximately 33,500 feet (6.34 miles).

Compared to Mount Everest's height of 29,031.7 feet (5.49 miles) above sea level, Mauna Kea is indeed higher than Mount Everest by approximately a mile when measured from its true base.

Understanding Mountain Measurements

The perception of a mountain's "size" or "height" can vary depending on the measurement criteria used.

  • Above Sea Level (ASL): This is the most common and widely recognized method for measuring mountain height. Mountains are measured from the average level of the sea to their summit. By this metric, Mount Everest is the world's highest peak.
  • Base-to-Peak Height: This method measures the total vertical distance from a mountain's geological base to its highest point. For mountains like Mauna Kea, whose base is far below sea level, this measurement reveals their true colossal scale.

Mauna Kea vs. Mount Everest: A Comparison

To illustrate the difference, here's a comparison of their dimensions:

Feature Mauna Kea Mount Everest
Height Above Sea Level 13,800 feet (4,207 meters) 29,031.7 feet (8,848.86 meters)
Height Below Sea Level 19,700 feet (6,000 meters) N/A (base is on land)
Total Height (Base to Peak) Approximately 33,500 feet (10,210 meters) Approximately 13,000–15,000 feet (base to peak, estimation varies by definition)
Location Hawaii, USA (Pacific Ocean) Nepal/China (Himalayan Range)
Type Dormant Shield Volcano Mountain Peak (part of a fold mountain range)

This table highlights that while Everest's summit is higher above the sea, Mauna Kea's overall structure, including its submerged portion, makes it the world's tallest mountain from base to peak.

Why the Distinction Matters

The unique way Mauna Kea's height is measured highlights the diverse geological formations on Earth. Volcanoes, especially shield volcanoes like Mauna Kea, often have vast bases that extend deep below the surface, making them incredibly massive structures even if their visible portion is not the highest. This distinction is crucial for a complete understanding of Earth's grandest natural formations.