Pressure Formula:
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Definition: This calculator converts force in pounds (lbf) over an area in square inches (in²) to pressure in pounds per square inch (psi).
Purpose: It helps engineers, mechanics, and technicians calculate pressure for hydraulic systems, pneumatic systems, and structural applications.
The calculator uses the formula:
Where:
Explanation: Pressure is calculated by dividing the applied force by the area over which the force is distributed.
Details: Accurate pressure calculations are critical for system design, safety evaluations, and performance optimization in mechanical systems.
Tips: Enter the force in pounds (lbf) and the area in square inches (in²). Both values must be greater than zero.
Q1: What's the difference between psi and lbf?
A: PSI (pounds per square inch) is a pressure unit, while lbf (pound-force) is a force unit. PSI includes the area component.
Q2: How do I measure the area for this calculation?
A: Measure the contact area in square inches where the force is being applied.
Q3: Can I use this for hydraulic pressure calculations?
A: Yes, this is the fundamental formula used in hydraulic system pressure calculations.
Q4: What's a typical psi range for common applications?
A: Car tires (30-35 psi), hydraulic systems (500-5000 psi), scuba tanks (3000 psi).
Q5: How does area affect pressure?
A: For the same force, smaller areas create higher pressures (needle vs. blunt object).