Air pressure is equal to the total weight of a vertical column of air with a unit cross-sectional area extending from the place of measurement to the top of the atmosphere. Air pressure at sea level is approximately 14.7 pounds per square inch or approximately kilograms per square centimeter.

1 kilograms per square centimeter

Explanation: Air pressure is the force exerted on a surface by the air above it as gravity pulls it to Earth. At sea level, about 1 kilogram of air presses down on each square centimeter of surface (1 kg/cm²)

The standard air pressure at sea level is about 14.7 pounds per square inch.

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