1. What is Torque Conversion?

Torque conversion between foot-pounds (lb-ft) and Newton meters (Nm) is essential in engineering, automotive, and mechanical applications where torque measurements need to be converted between imperial and metric systems.

2. How Does the Calculator Work?

The calculator uses the conversion formula:

Where:

• \( T_{Nm} \) — Torque in Newton meters
• \( T_{ftlbs} \) — Torque in foot-pounds
• 1.35582 — Conversion factor from lb-ft to Nm

Explanation: This conversion factor is derived from the relationship between pound-force, foot, and Newton meter units.

3. Importance of Torque Conversion

Details: Accurate torque conversion is crucial for international engineering projects, automotive repair, manufacturing specifications, and ensuring proper fastener tension in mechanical assemblies.

4. Using the Calculator

Tips: Enter torque value in foot-pounds (lb-ft). The value must be non-negative. The calculator will automatically convert it to Newton meters (Nm).

5. Frequently Asked Questions (FAQ)

Q1: Why is the conversion factor 1.35582?
A: This factor comes from the definition: 1 pound-force foot = 1.3558179483314004 Newton meters, commonly rounded to 1.35582 for practical calculations.

Q2: What's the difference between lb-ft and ft-lbs?
A: Both represent foot-pounds of torque. lb-ft is the technically correct notation, while ft-lbs is commonly used but technically refers to foot-pounds of energy.

Q3: When is this conversion needed?
A: When working with international specifications, automotive repair manuals, engineering drawings, or equipment that uses different measurement systems.

Q4: How accurate is this conversion?
A: The conversion is mathematically exact based on the defined relationship between the units. For most practical applications, the 1.35582 factor provides sufficient precision.

Q5: Can I convert Nm back to lb-ft?
A: Yes, to convert back, divide Newton meters by 1.35582 (or multiply by approximately 0.737562).