🔧 Torque Unit Converter

Enter a torque value in Nm, ft-lb, kgf-m, or kgf-cm and instantly see the equivalent in the other 3 units.

Converted Values

Nm (Newton-meter)

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ft-lb (foot-pound)

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kgf-m (kilogram-force meter)

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kgf-cm (kilogram-force centimeter)

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GUIDE

Learn more

What Are Torque Units?

Torque is the rotational equivalent of force, expressed in SI units as Nm (Newton-meters). In the US and UK, automotive and tool specs commonly use ft-lb (foot-pounds), while older Korean/Japanese manuals and bicycle/motorcycle documentation still use kgf-m and kgf-cm, so converting between them is often necessary.

Conversion Factors

1 Nm = 0.737562149 ft-lb
1 Nm = 0.101971621 kgf-m
1 Nm = 10.1971621 kgf-cm

For example, a car wheel-nut spec of 120 Nm equals roughly 88.5 ft-lb, 12.24 kgf-m, and 1224 kgf-cm.

Practical Considerations

If a torque wrench's scale unit differs from a manual's spec unit and the conversion is wrong, bolts can end up under- or over-tightened, risking loosening or part damage. kgf-m and kgf-cm differ by a factor of 100, which is an easy unit mix-up, so always double-check. Pair this with the bolt torque lookup calculator to convert its recommended torque values into whichever unit your wrench uses.

Frequently asked questions

What's the difference between Nm and kgf-m?

Nm (Newton-meter) is the SI standard unit, while kgf-m (kilogram-force meter) is a gravitational unit. 1 kgf-m ≈ 9.80665 Nm, and this calculator uses the factor 1 Nm = 0.101971621 kgf-m.

Are ft-lb and lb-ft the same unit?

Yes, ft-lb (foot-pound) and lb-ft are commonly used interchangeably; both represent the product of pound-force and foot-length as a torque unit.

How precise are the converted results?

Calculations use double-precision floating point internally and results are rounded to 4 significant figures for display. For precision work, verify with the raw unrounded value.