One atmosphere equals how many feet?

Answer 1

Well, the atmosphere goes all round the planet Earth and as the mean circumference 40,041.47 km that is how long the atmosphere must be.

However if you want to know how thick the atmosphere is, there is no definite boundary between the atmosphere and outer space, it just slowly becomes thinner and fades into space. The Kármán line, at 100 km (62 miles or 328,000 ft), is frequently regarded as the boundary between atmosphere and outer space.

Answer 2

I believe a better way to ask this question is "how does atmospheric pressure vary with altitude?" I refer you to this page on wikipedia: http://en.wikipedia.org/wiki/Atmospheric_pressure#Calculating_variation_with_altitude Here you will find the proper equation.

Answer 3

An ATMOSPHERE is a measure of AIR PRESSURE and is measured in 'BARS'

1 Bar is equal to 14.7 pounds per square inch. In the Metric system it is measured in PASCAL.

In diving, the depth of approximately 33 feet is equal to one atmosphere.