Convert Pound Per Square Inch to Pound Per Square Foot (psi to psf)

In next fields, kindly type your value in the text box under title [ From: ] to convert from pound per square inch to pound per square foot (psi to psf). As you type your value, the answer will be automatically calculated and displayed in the text box under title [ To: ].

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Definitions:

Pound Per Square Inch (abbreviations: psi, or lb/in2): is a unit of pressure or of stress based on avoirdupois units. It is the pressure resulting from a force of one pound-force applied to an area of one square inch.

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 Pounds Per Square Inches to Pounds Per Square Feet

Example: How many pounds per square feet are equivalent to 32.78 pounds per square inches?


As;

1 pounds per square inches = 144.00009216006 pounds per square feet

32.78 pounds per square inches = Y pounds per square feet

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

Y equals 32.78 times 144.00009216006 over 1

(i.e.) Y = 32.78 * 144.00009216006 / 1 = 4720.3230210068 pounds per square feet

Answer is: 4720.3230210068 pounds per square feet are equivalent to 32.78 pounds per square inches.


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 ) 44.68 psi

( ii ) 50 psi

( iii ) 31.79 psi



References
  • Wikipedia
  • USMA
  • NIST

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