EARTH CURVATURE
CALCULATOR
Simply Change Settings 
to Familiar Units

example:

Distance to the object to: miles

Eyesight level to: inches

Distance to horizon: miles

Obscured object part: feet




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You've been taught your entire life, this is how the world is shaped.
However when easy math is applied, it becomes clear our reality and what we have been taught, do not align.
1
2
In this experiment:
Distance to object is 6 miles.
The Eyesight level is 18 inches

Image 1 shows how the curvature should be hiding the entire boat and flag under the horizon 13.5 feet.
Image 2 shows what is seen in reality, no curvature, 
with entire boat and flag in full view of observer.
Example:
FALSE WORLD
TRUE WORLD
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