SizerooGuessroo · All sizes

How tall is Mauna Kea, measured from the sea floor?

10,210 mAbout 33,497 ft · Land-sized

About 10.2 km from its base, taller than Everest, though only 4,207 m is above sea level.

A red kangaroo would need about 1,300 hops (8 m each) to cover it.

10,210 m
Angel Falls

To scale: Mauna Kea is about 10× bigger than Angel Falls.

Think you can guess sizes? Play today's Sizeroo

Things about the same size

Many real things vary in size, so we use a typical or official figure. Spotted a mistake? Email hello@guessroo.com.