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Force and Torque

lbf·fttokN·m

Convert pound-force feet (lbf·ft) to kilonewton-metres (kN·m).

Factor1 lbf·ft = 0.001355818 kN·m

Converter

lbf·ft

Accepts numbers or expressions, e.g. 150 + 14.7

Result
1.35582kN·m

Rendered to 6 significant figures.

Formula

Formula
kN·m = lbf·ft × 0.001355818

Multiply any value in pound-force feet by 0.001355818 to obtain the value in kilonewton-metres.

Worked example

Convert 1000 lbf·ft to kN·m.

  1. 01Start with 1000 lbf·ft.
  2. 02Multiply by the conversion factor: 1000 × 0.001355818 = 1.35582 kN·m.
Result1000 lbf·ft = 1.35582 kN·m

Conversion table

lbf·ftkN·m
10.0013558
20.0027116
50.0067791
100.013558
200.027116
500.067791
1000.13558
2000.27116
5000.67791
10001.3558

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from lbf·ft to kN·m?
1 lbf·ft equals 0.001355818 kN·m. To convert, multiply the value in pound-force feet by 0.001355818.
How do I convert 1 lbf·ft to kN·m?
1 lbf·ft = 0.00135582 kN·m. For any value, multiply by 0.001355818.
How do I convert kN·m back to lbf·ft?
Divide by the same factor — or equivalently, multiply by 737.5621. So 1 kN·m = 737.562 lbf·ft.
When would I need to convert pound-force foot to kilonewton-metre?
Torque conversions between lbf·ft and kN·m are needed in fastener specification, mechanical equipment design, drivetrain analysis and lifting/rigging calculations. Newton-metre (N·m) is the SI standard; lbf·ft and lbf·in dominate US fastener and machinery datasheets; kgf·m appears in legacy metric documentation. Display symbol is N·m — never the abbreviation "nm", which denotes nanometre.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).

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