Psi (pounds per square inch) and mm Hg (millimeters of mercury) are units of pressure commonly used in different industries and applications. Converting between these units is often necessary to ensure accuracy and compatibility in pressure measurements. 1 psi is equivalent to approximately 51.715 mm Hg, and the conversion factor can be used to transform values between these units. Understanding the conversion between psi and mm Hg is essential in various fields, such as hydraulics, medical equipment, environmental monitoring, and industrial processes where pressure measurements are critical.