What is the conversion factor from psi to kPa?

The correct conversion factor from psi (pounds per square inch) to kPa (kilopascals) is 1 psi = 6.89 kPa. This value is derived from the relationship between these two units of pressure.

1 psi equals the pressure exerted by a weight of 1 pound applied to an area of 1 square inch. To convert this to kilopascals, it's essential to understand that 1 psi is slightly less than 7 kPa. The conversion factor is calculated based on the metric equivalent of pounds and square inches to the metric units of pressure, where 1 kPa is equal to 1000 pascals, and knowing that 1 psi is approximately equal to 6895 pascals.

Thus, when you divide 6895 pascals by 1000 (to convert to kilopascals), you end up with approximately 6.89 kPa. This is an important conversion in many engineering applications, especially when dealing with systems that require pressure measurement in different units, such as hydraulic systems or steam applications, where accurate pressure readings are critical for safety and efficiency.