Pressure is a physical quantity that describes the force exerted per unit area. The SI unit of pressure is the Pascal (Pa), which is defined as one Newton per square meter (N/m²). The pound per square inch (psi) is another commonly used unit of pressure, especially in the United States. Converting psi to Newtons involves a simple unit conversion formula. 1 psi is equivalent to approximately 6895 Pa or 0.006895 MPa. This conversion is essential in various fields, including fluid mechanics, engineering, and meteorology, where pressure measurements and calculations play a crucial role.