What Are the Various Units of Pressure? Show How to Convert

Short Answer

What are the various units of pressure? Show how to convert one pressure unit into another using dimensional analysis.
The formal, SI-approved unit of pressure is the pascal (Pa), which is defined as 1 N/m². A common unit of pressure is the atmosphere (atm), which was originally defined as the average atmospheric pressure at sea level. A more reliable and common unit is millimeters of mercury (mmHg), which is the amount of pressure exerted by a column of mercury exactly 1 mm high. An equivalent unit is the torr, which equals 1 mmHg. 1.00 atm