1 lb-ft = 0.00135582 kN·m (pound-foot → kilonewton-meter)
1 lb-ft = 0.00135582 kN·m
1 pound-foot equals 0.00135582 kilonewton-meters. To convert pound-feet to kilonewton-meters, multiply the pound-foot value by 0.00135582. For quick reference: 1 lb-ft = 0.00135582 kN·m, 5 lb-ft = 0.00677909 kN·m, 10 lb-ft = 0.0135582 kN·m, 100 lb-ft = 0.135582 kN·m.
Kilonewton-meters = Pound-feet × 0.00135582Pound-feet to kilonewton-meters multiplies by 0.0013558179 — the exact 1.3558179483314 N·m per lb-ft divided by 1,000. A 100 lb-ft lug-nut spec is 0.1356 kN·m, illustrating why the kilonewton-meter is reserved for heavy machinery rather than hand tools. The conversion goes the other way for US crane and rigging figures entering European structural documentation. Confirm the source really means lb-ft: a lb-in figure mistaken for lb-ft inflates the converted moment twelve-fold.
Wind-farm foundation engineers convert a US turbine supplier's bolt-tensioning spec for a European site: a 3,200 lb-ft anchor-bolt torque becomes 4.34 kN·m on the European contractor's installation checklist, a step required because the foundation was engineered locally to Eurocode standards even though the turbine hardware itself shipped from an American factory.
Start with your value in pound-feet.
Multiply the pound-foot value by 0.00135582. This is the exact conversion factor from pound-feet to kilonewton-meters.
The product is your value in kilonewton-meters. For example, 5 lb-ft × 0.00135582 = 0.00677909 kN·m.
The exact factor from pound-feet to kilonewton-meters is 0.00135582.
Kilonewton-meters = Pound-feet × 0.00135582
Fifty common reference values, hand-picked for skim utility. Use the calculator above for any value not listed.
| Pound-feet (lb-ft) | Kilonewton-meters (kN·m) |
|---|---|
| 0.1 lb-ft | 0.00013558 kN·m |
| 0.5 lb-ft | 0.00067791 kN·m |
| 1 lb-ft | 0.0013558 kN·m |
| 2 lb-ft | 0.0027116 kN·m |
| 5 lb-ft | 0.0067791 kN·m |
| 8 lb-ft | 0.010847 kN·m |
| 10 lb-ft | 0.013558 kN·m |
| 15 lb-ft | 0.020337 kN·m |
| 20 lb-ft | 0.027116 kN·m |
| 25 lb-ft | 0.033895 kN·m |
| 30 lb-ft | 0.040675 kN·m |
| 40 lb-ft | 0.054233 kN·m |
| 50 lb-ft | 0.067791 kN·m |
| 60 lb-ft | 0.081349 kN·m |
| 75 lb-ft | 0.10169 kN·m |
| 90 lb-ft | 0.12202 kN·m |
| 100 lb-ft | 0.13558 kN·m |
| 125 lb-ft | 0.16948 kN·m |
| 150 lb-ft | 0.20337 kN·m |
| 175 lb-ft | 0.23727 kN·m |
| 200 lb-ft | 0.27116 kN·m |
| 225 lb-ft | 0.30506 kN·m |
| 250 lb-ft | 0.33895 kN·m |
| 300 lb-ft | 0.40675 kN·m |
| 350 lb-ft | 0.47454 kN·m |
| 400 lb-ft | 0.54233 kN·m |
| 450 lb-ft | 0.61012 kN·m |
| 500 lb-ft | 0.67791 kN·m |
| 600 lb-ft | 0.81349 kN·m |
| 700 lb-ft | 0.94907 kN·m |
| 800 lb-ft | 1.0847 kN·m |
| 900 lb-ft | 1.2202 kN·m |
| 1000 lb-ft | 1.3558 kN·m |
| 1200 lb-ft | 1.627 kN·m |
| 1500 lb-ft | 2.0337 kN·m |
| 1800 lb-ft | 2.4405 kN·m |
| 2000 lb-ft | 2.7116 kN·m |
| 2500 lb-ft | 3.3895 kN·m |
| 3000 lb-ft | 4.0675 kN·m |
| 5000 lb-ft | 6.7791 kN·m |
| 7500 lb-ft | 10.169 kN·m |
| 10000 lb-ft | 13.558 kN·m |
| 15000 lb-ft | 20.337 kN·m |
| 20000 lb-ft | 27.116 kN·m |
| 25000 lb-ft | 33.895 kN·m |
| 50000 lb-ft | 67.791 kN·m |
| 75000 lb-ft | 101.69 kN·m |
| 100000 lb-ft | 135.58 kN·m |
| 200000 lb-ft | 271.16 kN·m |
| 500000 lb-ft | 677.91 kN·m |
The pound-foot (lb-ft) is the customary torque unit in the United States. It equals exactly 1.355817948 N·m — derived from the pound-force (4.4482216152605 N) times the foot (0.3048 m). Often informally written 'ft-lb' or 'foot-pound', which technically denotes energy not torque, but the convention is universal in automotive spec sheets.
The kilonewton-meter (kN·m) equals 1,000 N·m. Used for heavy machinery, large industrial motors, and structural engineering — the everyday unit becomes unwieldy past about 10⁴ N·m.
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