1. What is Psi to Ft Pounds Torque Approximation?

Definition: This calculator approximates torque in foot-pounds based on pressure in psi and area in square inches.

Purpose: It helps mechanical engineers, technicians, and DIYers estimate torque values when working with hydraulic systems, fasteners, or other pressure applications.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( F \) — Torque (foot-pounds)
• \( P \) — Pressure (pounds per square inch, psi)
• \( A \) — Area (square inches, in²)
• 12 — Conversion factor (inches to feet)

Explanation: The pressure multiplied by area gives force in pounds, which is then converted to torque in foot-pounds by dividing by 12 (inches per foot).

3. Importance of Torque Approximation

Details: Proper torque estimation ensures correct fastener tension, prevents equipment damage, and maintains system integrity in hydraulic applications.

4. Using the Calculator

Tips: Enter the pressure in psi and the area in square inches. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: How accurate is this approximation?
A: This provides a rough estimate. Actual torque may vary based on friction, efficiency, and other mechanical factors.

Q2: What's a typical application for this calculation?
A: Useful for estimating torque in hydraulic wrenches, cylinder applications, or when pressure readings are available but torque isn't directly measured.

Q3: Why divide by 12?
A: The division converts inch-pounds to foot-pounds (12 inches = 1 foot).

Q4: Can I use this for bolt torque calculations?
A: This gives a basic estimate, but actual bolt torque should consider thread pitch, friction, and manufacturer specifications.

Q5: What if I know the radius instead of area?
A: First calculate area using \( \pi \times r^2 \) for circular applications, then use this calculator.