How much torque is that in other units?
Convert between newton metres, foot-pounds, inch-pounds, kilogram-force metres and more.
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Result
135.6 N·m
100 pound-force feet is about 135.6 newton metres
- The other way round: 1 N·m ≈ 0.7376 lbf·ft.
In all units
- Newton metres
- 135.6 N·m
- Kilonewton metres
- 0.1356 kN·m
- Newton centimetres
- 13,560 N·cm
- Kilogram-force metres
- 13.83 kgf·m
- Pound-force feet
- 100 lbf·ft
- Pound-force inches
- 1,200 lbf·in
- Ounce-force inches
- 19,200 ozf·in
- Dyne centimetres
- 1,356,000,000 dyn·cm
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Convert between newton metres, foot-pounds, inch-pounds, kilogram-force metres and more.
How to use
- Type the torque you want to convert, for example from a torque wrench setting or a repair manual.
- Choose the units to convert from and to. Use the swap button to flip them.
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How it works
Torque is a force times the distance from the axis it turns around. The SI unit is the newton metre (N·m): one newton pushing at the end of a one-metre lever. Every unit here is converted through newton metres.
A foot-pound (lbf·ft) is one pound-force at one foot: 0.45359237 kg × 9.80665 m/s² × 0.3048 m ≈ 1.3558 N·m. So 100 N·m ÷ 1.3558 ≈ 73.76 lbf·ft. An inch-pound is a twelfth of a foot-pound, and a kilogram-force metre is exactly 9.80665 N·m.
The definitions come from NIST Special Publication 811. Torque values in manuals are often rounded, so a converted setting is only as precise as the number you start from.
Frequently asked questions
How many N·m is 1 foot-pound?
About 1.3558 N·m. Multiply foot-pounds by 1.3558 to get newton metres.
Are foot-pounds and pound-feet the same?
For torque, yes: both mean one pound-force acting at one foot. Engineers often write lbf·ft (pound-feet) to tell torque from the foot-pound of energy.
How many inch-pounds is a newton metre?
About 8.85 lbf·in.
How do I convert inch-pounds to foot-pounds?
Divide by 12. For example, 120 lbf·in is 10 lbf·ft. Check the unit carefully before setting a torque wrench.
Does this tell me the correct tightening torque?
No. It only converts a value you already have. Get the specified torque and lubrication conditions from the manufacturer.
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