The pound per square inch (abbreviation: psi) or, more accurately, pound-force per square inch (symbol: lbf/in2), [1] is a unit of measurement of pressure or of stress based on avoirdupois units and used …

Dec 4, 2025 · Pounds per square inch, written as psi, is a unit that tells you how hard something is pressing on a small area. It shows how much force in pounds pushes on one square inch of surface.

Feb 28, 2025 · PSI (pounds per square inch) is a unit of pressure that represents the force exerted over a one-square-inch area. It measures how much force is applied to a given surface area and is widely …

PSI is a unit of pressure used mainly in the United States and other countries using the imperial measurement system. PSI measures the amount of force (in pounds) exerted per square inch of …

4 days ago · Learn the most common pressure units (Pa, kPa, MPa, bar, mbar, psi, atm, Torr/mmHg, inHg, inH₂O), when to use each one, and how to convert accurately using formulas, examples, and …

Jul 12, 2024 · Explore the pound per square inch (psi), a unit of pressure measuring force per square inch area, tire pressure, hydraulic systems, and more.

Therefore, 1 PSI is measured as one pound of force applied per one square inch. [1] Since it is acting on a much smaller area than the pascal, 1 PSI is much more pressure than 1 pascal (metric unit).

Oct 11, 2025 · PSI, or "pounds per square inch," is a unit that measures pressure. It tells you the amount of force, in pounds, being exerted on a single square inch of a surface.

The pound per square inch (psi) unit is a fundamental measurement of pressure, serving as a versatile tool in engineering, industry, and everyday life. Its ability to quantify the force applied on a specific …

PSI is commonly used to measure the pressure of gases or liquids in various systems. For example, a car tire may have a recommended PSI of 30, meaning the air pressure inside the tire should be 30 …