1. What is a PSI to Ft Lbs Calculator?

Definition: This calculator converts pressure (PSI) to torque (foot-pounds) using the area and distance factors.

Purpose: It helps mechanical engineers, automotive technicians, and DIYers calculate torque values from hydraulic pressure or other pressure systems.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( Ft\ Lbs \) — Torque (foot-pounds)
• \( PSI \) — Pressure (pounds per square inch)
• \( Area \) — Effective area (square inches)
• \( Distance \) — Lever arm length (feet)

Explanation: The pressure is multiplied by the area to get force, then multiplied by distance to get torque.

3. Importance of Torque Calculation

Details: Proper torque calculation ensures correct bolt tightening, proper hydraulic system operation, and mechanical system safety.

4. Using the Calculator

Tips: Enter the pressure in PSI, effective area in square inches, and lever arm distance in feet. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between PSI and ft-lbs?
A: PSI measures pressure (force per unit area), while ft-lbs measures torque (rotational force).

Q2: Where is this calculation commonly used?
A: Hydraulic systems, bolt torque calculations, and mechanical advantage systems.

Q3: How do I determine the effective area?
A: For hydraulic cylinders, use piston area (πr²). For other applications, use the contact area under pressure.

Q4: Can I use this for metric units?
A: No, this calculator uses imperial units. For metric, convert to Pascals and Newtons.

Q5: Does this account for friction losses?
A: No, this gives theoretical torque. Actual torque may be less due to system inefficiencies.