**Definitions:**

**Atmosphere** (abbreviation: **atm**): is a unit of standard pressure, equal to 101325 Pa, or 1.01325 bar.

**Pound Per Square Foot** (abbreviations: **psf, or lb/ft2**): is a British (Imperial) and American pressure unit which is directly related to the psi pressure unit by a factor of 144 (1 sq ft = 12 in x 12 in = 144 sq in). Where, 1 pound per square foot equals 47.8803 pascals.

## How to Convert Atmospheres to Pounds Per Square Feet

*Example: How many pounds per square feet are equivalent to 90.99 Atmospheres?*

As;

1 Atmospheres = 2115.6219939981 pounds per square feet

90.99 Atmospheres = Y pounds per square feet

Assuming Y is the answer, and by criss-cross principle;

Y equals 90.99 times 2115.6219939981 over 1

(i.e.) Y = 90.99 * 2115.6219939981 / 1 = 192500.44523389 pounds per square feet

Answer is: 192500.44523389 pounds per square feet are equivalent to 90.99 Atmospheres.

*Practice Question: Convert the following units into psf:*

N.B.: After working out the answer to each of the next questions, click adjacent button to see the correct answer.

( i ) 60.78 atm

( ii ) 72.75 atm

( iii ) 97.9 atm