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Ft Lbs to Nm Converter
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Converted result
Nm = ft-lbs × 1.35582
Foot Pounds to Newton Meters Formula
Mechanical Engineering Conversion Examples
The conversion formula is Nm = ft-lbs × 1.35582. Common conversions: 25 ft-lbs = 33.9 Nm (small fasteners), 80 ft-lbs = 108.5 Nm (automotive applications), 150 ft-lbs = 203.4 Nm (wheel lug nuts), 250 ft-lbs = 338.9 Nm (structural bolts). The factor 1.35582 is the reciprocal of 0.73756 used in Nm to ft-lbs conversion.
Workshop Manual Conversion Needs
American workshop manuals specify torque in ft-lbs, while European manuals use Nm. When servicing a European vehicle using a US-calibrated torque wrench (or vice versa), accurate conversion is critical for safety. Under-torquing causes loosening and vibration damage; over-torquing causes bolt stretching, thread stripping, or component cracking. For complete reference tables, see our torque conversion chart.
Frequently Asked Questions
Multiply foot-pounds by 1.35582. For example, 100 ft-lbs × 1.35582 = 135.58 Nm.
They are the same unit. ft·lbf (foot-pound-force) is the technically precise notation, while ft-lbs is the common abbreviation used in everyday mechanics.
The US customary system uses foot-pounds for torque. Most American vehicles list torque specs in ft-lbs, while European and Asian manufacturers use Nm.