**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.

**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 Inches to Millimeters Of Mercury

*Example: How many Millimeters of Mercury are equivalent to 9.6 pounds per square inches?*

As;

1 pounds per square inches = 51.71379 Millimeters of Mercury

9.6 pounds per square inches = Y Millimeters of Mercury

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

Y equals 9.6 times 51.71379 over 1

(i.e.) Y = 9.6 * 51.71379 / 1 = 496.452384 Millimeters of Mercury

Answer is: 496.452384 Millimeters of Mercury are equivalent to 9.6 pounds per square inches.

*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 ) 71.51 psi

( ii ) 29.6 psi

( iii ) 64.19 psi