**Definitions:**

**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.

**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 Millimeters Of Mercury to Pounds Per Square Feet

*Example: How many pounds per square feet are equivalent to 20.56 Millimeters of Mercury?*

As;

1 Millimeters of Mercury = 2.7845297820991 pounds per square feet

20.56 Millimeters of Mercury = Y pounds per square feet

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

Y equals 20.56 times 2.7845297820991 over 1

(i.e.) Y = 20.56 * 2.7845297820991 / 1 = 57.249932319957 pounds per square feet

Answer is: 57.249932319957 pounds per square feet are equivalent to 20.56 Millimeters of Mercury.

*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 ) 77.32 mm hg

( ii ) 1.32 mm hg

( iii ) 90.09 mm hg