What's the difference between Nm, lb-ft, and in-lb?

Newton-meters (Nm) are the metric SI unit for torque, pound-feet (lb-ft) are the imperial unit commonly used in North America for automotive applications, and inch-pounds (in-lb) are used for smaller torque values. The conversions are: 1 Nm = 0.737562 lb-ft = 8.85075 in-lb. Each unit represents the same physical quantity but uses different scales.

When should I use Newton-meters vs pound-feet?

Use Newton-meters (Nm) when working with metric hardware, international specifications, or European vehicles. Use pound-feet (lb-ft) when working with American automotive specifications, standard/imperial hardware, or when manufacturer torque specs are in imperial units. Many modern vehicles use metric hardware even in the US, so check your service manual.

How accurate are the torque conversions?

Our converter uses highly precise conversion factors: 1 lb-ft = 1.3558179483314 Nm and 1 in-lb = 0.112984829 Nm. Results are displayed with up to 6 decimal places for maximum precision. For critical applications, always verify with a calibrated torque wrench.

What are typical torque values for common applications?

Typical automotive values: Lug nuts: 80-100 lb-ft, Oil drain plug: 20-30 lb-ft, Spark plugs: 15-25 lb-ft. Typical mechanical values: Small screws: 5-20 in-lb, Medium bolts: 10-50 Nm, Large structural bolts: 200-500 Nm. Always consult manufacturer specifications.

Why do I need to convert between torque units?

Different regions and industries use different measurement systems. European manufacturers typically specify torque in Nm, while American manufacturers often use lb-ft. When working with mixed hardware or following service procedures from different countries, torque conversion ensures you apply the correct force.

Can I use this for bicycle maintenance?

Yes! Many bicycle components use metric torque specifications (Nm), especially for carbon fiber parts. Typical bike torque values: Stem bolts: 5-8 Nm, Crank bolts: 30-50 Nm, Derailleur mounting: 8-12 Nm. Our converter helps ensure you don't over-tighten expensive carbon components.

Torque Converter

Precision torque conversions between Newton-meters, pound-feet, and inch-pounds for automotive maintenance, mechanical engineering, and professional wrench specifications. Essential for mechanics, engineers, and technical professionals requiring accurate torque measurements for fasteners and mechanical systems.

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Common torque values for automotive and mechanical applications

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Convert between Newton-meters, pound-feet, and inch-pounds.

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How it works: Converts torque units used in automotive and mechanical engineering. 1 Nm = 0.7376 lb-ft = 8.851 in-lb. Newton-meters are the SI standard.

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