**Definitions:**

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

**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 Atmospheres to Millimeters Of Mercury

*Example: How many Millimeters of Mercury are equivalent to 69.28 Atmospheres?*

As;

1 Atmospheres = 759.769 Millimeters of Mercury

69.28 Atmospheres = Y Millimeters of Mercury

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

Y equals 69.28 times 759.769 over 1

(i.e.) Y = 69.28 * 759.769 / 1 = 52636.79632 Millimeters of Mercury

Answer is: 52636.79632 Millimeters of Mercury are equivalent to 69.28 Atmospheres.

*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 ) 40.89 atm

( ii ) 86.77 atm

( iii ) 80.11 atm