Torque Converter — Nm to ft-lb
Convert newton-metres to pound-feet and back — plus N·cm, kN·m, in-lb and kgf·m — using the exact definitions.
About this tool
Enter a torque, choose the unit you have and the unit you want. You get the exact conversion and the same torque in every unit at once — handy for torque wrenches, workshop manuals and engine specs that mix metric and US units. 1 lbf·ft = 1.35582 N·m, 1 lbf·in = 0.112985 N·m and 1 kgf·m (kpm) = 9.80665 N·m.
Frequently asked questions
Divide by 1.35582, or multiply by 0.737562, because 1 lbf·ft = 1.3558179 N·m. So 100 N·m = 73.76 lbf·ft. To go the other way, multiply by 1.35582: 50 lbf·ft = 67.79 N·m.
For torque, yes — both mean a force of one pound acting one foot from the pivot, and both equal 1.35582 N·m. Engineers often write lbf·ft (pound-feet) for torque to keep it apart from the foot-pound as a unit of energy, but torque wrenches and manuals use both names.
Multiply by 0.112985, because one inch is 1/12 of a foot: 1 lbf·in = 1.35582 ÷ 12 N·m. So 100 lbf·in = 11.30 N·m, and 12 lbf·in = 1 lbf·ft. Small fasteners and bike parts are often specified in lbf·in or N·cm (1 N·m = 100 N·cm).
The kilogram-force metre, also called the kilopond-metre (kpm), is an older metric torque unit: the force of gravity on 1 kg (9.80665 N) acting 1 m from the pivot. 1 kgf·m = 9.80665 N·m, so a manual that says 10 kpm means about 98 N·m.
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