SizeGuess
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The measurement collection

Nature size comparison library

Mountain elevations, tree heights and waterfalls challenge your sense of vertical scale. Summit elevation is measured above sea level, rather than from the foot of a mountain.

Play the nature game ↗Open the size comparison tool

8 objects

nature

Denali

6.19 kmheight

Summit elevation above sea level, rounded to 6,190 m.

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nature

General Sherman tree

83.8 mheight

Published tree height; this is one named living tree.

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nature

Kilimanjaro

5.9 kmheight

Uhuru Peak elevation above sea level.

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nature

Mauna Loa

4.17 kmheight

Rounded summit elevation above sea level.

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nature

Mount Fuji

3.78 kmheight

Published summit elevation above sea level.

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nature

Mount Rainier

4.39 kmheight

Published summit elevation of 14,410 feet, rounded to 4,392 m.

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nature

Mount Whitney

4.42 kmheight

Rounded summit elevation above sea level.

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nature

Niagara Horseshoe Falls

57 mheight

Average vertical drop published by Niagara Parks for the Canadian Horseshoe Falls.

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Get a sense of scale.

  1. Find your reference.The forest-green shape has a known measurement. Check the height, length or diameter label.
  2. Resize your guess.Use the slider, the − / + buttons, or drag sideways on the board. Arrow keys adjust the slider.
  3. Lock it in.The teal outline reveals the recorded true size. Earn up to 100 points per round; five rounds make 500.
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