You can find metric conversion tables for SI units, as well as English units, currency, and other data. If you are measuring relative to vacuum and want to resolve the pressure relative to the atmosphere, then you should use the form below.

The pound per square inch or, more accurately, pound-force per square inch symbol: Examples include mm, inch, 100 kg, US fluid ounce, 6'3", 10 stone 4, cubic cm, metres squared, grams, moles, feet per second, and many more! The answer is 14. It is the pressure resulting from a force of one pound-force applied to an area of one square inch.

The above form works if you are measuring differential pressure, such as the difference in psi between two points. Type in unit symbols, abbreviations, or full names for units of length, area, mass, pressure, and other types.

Type in your own numbers in the form to convert the units! You can view more details on each measurement unit: Note that rounding errors may occur, so always check the results. Enter two units to convert From: It also gives the correct answer for absolute pressure, assuming you are measuring psia, which is the pressure relative to absolute zero vacuum.