Torque Converter
Convert between Newton-metres, pound-foot, pound-inch, kilogram-force·metre, and more torque units.
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How to use this calculator
- 1
Enter the torque value you want to convert.
- 2
Select the unit you are converting from (e.g. N·m).
- 3
Select the target unit (e.g. lb·ft).
- 4
The result appears instantly.
Frequently asked questions
How do I convert Nm to lb-ft?
Divide Newton-metres by 1.35582 to get pound-feet. For example, 400 Nm ÷ 1.35582 = 295 lb·ft.
How do I convert lb-ft to Nm?
Multiply pound-feet by 1.35582 to get Newton-metres. For example, 300 lb·ft × 1.35582 = 407 Nm.
What is torque?
Torque is the rotational equivalent of linear force — it is the tendency of a force to rotate an object about an axis. Torque = Force × Distance from the pivot. Engine torque determines a vehicle's pulling and acceleration power.
What is the difference between torque and horsepower?
Torque is a force that causes rotation (measured in Nm or lb·ft). Horsepower is the rate at which work is done (power). They are related: HP = Torque (lb·ft) × RPM ÷ 5,252. High torque at low RPM = good for towing; high HP at high RPM = good for top speed.
Torque unit conversion guide
Newton-metres and pound-feet
Newton-metres (Nm) is the SI unit of torque. Pound-feet (lb·ft) is used in the US and UK, particularly for engine and fastener specifications. The conversion is: 1 lb·ft = 1.35582 Nm. European car specs list torque in Nm; American specs typically use lb·ft.
Torque in automotive engineering
A typical family car produces 150–300 Nm (110–220 lb·ft). A performance car: 400–600 Nm. A large truck or diesel engine: 1,000–2,000 Nm. Electric vehicles often produce peak torque instantly from 0 RPM, which is why they feel so responsive.
Torque in tools and fasteners
Torque wrenches are used to tighten bolts to precise specifications — typically in Nm or lb·ft. Over-tightening can strip threads or warp components. Cylinder head bolts: 80–120 Nm. Wheel lug nuts: 100–130 Nm. Always consult the manufacturer's torque spec.
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