Mariana Trench vs Mount Everest: Size Comparison
The Mariana Trench is about 1.2× the size of Mount Everest: it measures 10.9 km (7 mi) deep, while Mount Everest is 8,849 m (5 mi) tall.
If you could lift Mount Everest and set it down inside the Challenger Deep, its summit would still sit more than 2 km below the ocean surface — you could stack the Burj Khalifa on top of Everest and it still wouldn't break the waves. The deepest scar on Earth beats the highest peak, comfortably.
Measurements side by side
| Mariana Trench | Mount Everest | Ratio | |
|---|---|---|---|
| Length | 11 km (7 mi) | 15 km (9 mi) | 1.4× |
| Height | 10.9 km (7 mi) | 8,849 m (5 mi) | 1.2× |
To-scale view
Drawn to true scale from the measurements below.
Cinematic scene generated with AI — for accurate proportions, see the to-scale view above.
How many Mount Everests fit in a Mariana Trench?
- 1 Mount Everest placed end to end matches one Mariana Trench's depth.
Frequently asked questions
- Is Mount Everest bigger than a Mariana Trench?
- No. The Mariana Trench (10.9 km (7 mi)) is about 1.2× the size of Mount Everest (8,849 m (5 mi)).
- How many Mount Everests fit alongside a Mariana Trench?
- Placed end to end, about 1 Mount Everest spans the full extent of one Mariana Trench.
Similar comparisons
Sources & measurement notes
Mariana Trench: The Challenger Deep, the trench's deepest point, lies about 10,935 m below sea level (2021 NOAA-supported survey) — the deepest known point in Earth's oceans. Height here means depth below the surface; the visible chasm breadth (~11 km) is approximate. The trench itself stretches ~2,550 km along the Pacific floor.
Mount Everest: 8,848.86 m above sea level — the official 2020 China–Nepal joint survey figure, the highest point on Earth. The breadth of the visible massif (~15 km) is approximate; unlike buildings, a mountain has no defined footprint.