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Psi To Ft Lbs Calculator (Pressure to Torque Approximate)

Torque Formula:

\[ F = \frac{P \times A}{12} \]

psi
in²
ft-lbf

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1. What is a Psi to Ft Lbs Calculator?

Definition: This calculator converts pressure (psi) and area (in²) into an approximate torque value in foot-pounds (ft-lbf).

Purpose: It helps engineers and mechanics estimate torque based on hydraulic pressure or other pressure measurements.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ F = \frac{P \times A}{12} \]

Where:

Explanation: The pressure multiplied by area gives force in pounds, then divided by 12 converts inch-pounds to foot-pounds.

3. Importance of Pressure to Torque Conversion

Details: This conversion is essential for hydraulic systems, bolt tensioning, and any application where pressure needs to be translated into rotational force.

4. Using the Calculator

Tips: Enter the pressure in psi and the effective area in square inches. Both values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why divide by 12 in the formula?
A: This converts inch-pounds to foot-pounds (12 inches = 1 foot).

Q2: What's a typical application for this calculation?
A: Hydraulic torque wrenches, cylinder force calculations, and pneumatic systems often use this conversion.

Q3: How accurate is this approximation?
A: It provides a good estimate but doesn't account for efficiency losses, friction, or other real-world factors.

Q4: Can I use this for bolt torque calculations?
A: Yes, but for precise bolt torque, consider additional factors like thread friction and lubrication.

Q5: What if I know the radius instead of area?
A: First calculate area using \( A = \pi \times r^2 \) where r is the radius in inches.

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