Torque Unit Converter (Nm, lb-ft)
Convert torque between Nm, lb-ft, lb-in, kgf·m and Ncm — all values update at once.
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Torque Units in Practice
1 lb-ft = 1.3558 Nm; 1 kgf·m = 9.807 Nm; 1 lb-in = 0.113 Nm. European bolt tables and torque wrenches use Nm, American automotive manuals lb-ft (and lb-in for small fasteners), older Asian manuals kgf·m — enter any one, the rest update.
The classic mistake is torquing to a lb-ft spec with an Nm wrench unconverted: 100 lb-ft is 136 Nm, so a bolt torqued to "100 Nm" would be 26% loose. Small electronics screws are usually specified in lb-in or Ncm.
Frequently Asked Questions
Is ft-lb the same as lb-ft?
For tightening torque, yes — both mean pound-force × foot. Physics texts reserve ft-lb for energy, but every torque wrench and car manual treats them identically.
What about newton-centimeters?
1 Nm = 100 Ncm. The unit shows up on precision screwdrivers and small servos; the converter includes it for that reason.
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Torque Unit Converter (Nm, lb-ft)