**Definitions:**

**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.

**Millimeter Of Mercury** (abbreviations: **mm Hg, or mmHg**): is a manometric unit of pressure, equal to 133.322387415 pascals. It is the extra pressure generated by a column of mercury of one millimeter high.

## How to Convert Pounds Per Square Feet to Millimeters Of Mercury

*Example: How many Millimeters of Mercury are equivalent to 99.8 pounds per square feet?*

As;

1 pounds per square feet = 0.35912706210891 Millimeters of Mercury

99.8 pounds per square feet = Y Millimeters of Mercury

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

Y equals 99.8 times 0.35912706210891 over 1

(i.e.) Y = 99.8 * 0.35912706210891 / 1 = 35.840880798469 Millimeters of Mercury

Answer is: 35.840880798469 Millimeters of Mercury are equivalent to 99.8 pounds per square feet.

*Practice Question: Convert the following units into mm hg:*

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

( i ) 42.85 psf

( ii ) 75.48 psf

( iii ) 68.83 psf