Nm to lb-ft Converter

Convert between Newton-metres and foot-pounds instantly. Common shop conversions for torque wrenches, fastener specs, and workshop use.

Torque Converter

Common Fastener Torque Reference

Fastener	Grade / Material	Torque (Nm)	Torque (lb-ft)	Notes
M6 bolt	8.8 steel	10	7.4	Dry, typical
M8 bolt	8.8 steel	25	18.4	Dry, typical
M10 bolt	8.8 steel	50	36.9	Dry, typical
M12 bolt	8.8 steel	86	63.4	Dry, typical
M14 bolt	8.8 steel	135	99.6	Dry, typical
M16 bolt	8.8 steel	210	154.9	Dry, typical
Spark plug	Aluminium head	20–30	14.8–22.1	Verify OEM spec
Wheel nut (M12)	Steel wheel	100–140	73.8–103.3	Verify vehicle spec

How to Use This Reference

Multiply Newton-metres by 0.7376 to get foot-pounds. Multiply foot-pounds by 1.3558 to get Newton-metres. The table values above are general references for dry fastener assemblies — always use manufacturer-specified torque values for safety-critical applications.

Lubricated fasteners typically require 15–25% less torque than dry values. Thread condition, coating, and fastener grade all affect the correct torque setting. Use this as a starting guide only.

Related References

Tap Drill Chart Metric coarse, UNC, and UNF tap drill sizes. View chart → Bolt Grade Chart Metric and SAE bolt grades with tensile strength and head markings. View chart → Fraction to Decimal Chart Complete 1/64 through 63/64 inch fractions with mm equivalents. View chart →

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