1 lb-ft = 0.138255 kgf·m (pound-foot → kilogram-force-meter)
1 lb-ft = 0.138255 kgf·m
1 pound-foot equals 0.138255 kilogram-force-meters. To convert pound-feet to kilogram-force-meters, multiply the pound-foot value by 0.138255. For quick reference: 1 lb-ft = 0.138255 kgf·m, 5 lb-ft = 0.691275 kgf·m, 10 lb-ft = 1.38255 kgf·m, 100 lb-ft = 13.8255 kgf·m.
Kilogram-force-meters = Pound-feet × 0.138255Pound-feet to kilogram-force-meters multiplies by 0.138255 — the exact 1.3558179483314 N·m per lb-ft divided by 9.80665 N·m per kgf·m. A US service manual's 80 lb-ft lug-nut torque is 11.06 kgf·m on an older European or Japanese wrench scale still marked in kgf·m. The conversion bridges American automotive specs and legacy metric documentation. Don't shortcut via 'divide by 7' — the true reciprocal is 7.233, and the rounding error compounds on high-torque cylinder-head sequences.
Off-road truck builders converting a US axle spec for an Australian or Japanese parts supplier use this: a 450 lb-ft differential-carrier bolt torque is 62.24 kgf·m, the figure the overseas supplier's own torque-wrench scale actually reads, since imported drivetrain parts often ship with a metric-scale wrench that has no pound-foot markings at all.
Start with your value in pound-feet.
Multiply the pound-foot value by 0.138255. This is the exact conversion factor from pound-feet to kilogram-force-meters.
The product is your value in kilogram-force-meters. For example, 5 lb-ft × 0.138255 = 0.691275 kgf·m.
The exact factor from pound-feet to kilogram-force-meters is 0.138255.
Kilogram-force-meters = Pound-feet × 0.138255
Fifty common reference values, hand-picked for skim utility. Use the calculator above for any value not listed.
| Pound-feet (lb-ft) | Kilogram-force-meters (kgf·m) |
|---|---|
| 0.1 lb-ft | 0.013825 kgf·m |
| 0.5 lb-ft | 0.069127 kgf·m |
| 1 lb-ft | 0.13825 kgf·m |
| 2 lb-ft | 0.27651 kgf·m |
| 5 lb-ft | 0.69127 kgf·m |
| 8 lb-ft | 1.106 kgf·m |
| 10 lb-ft | 1.3825 kgf·m |
| 15 lb-ft | 2.0738 kgf·m |
| 20 lb-ft | 2.7651 kgf·m |
| 25 lb-ft | 3.4564 kgf·m |
| 30 lb-ft | 4.1476 kgf·m |
| 40 lb-ft | 5.5302 kgf·m |
| 50 lb-ft | 6.9127 kgf·m |
| 60 lb-ft | 8.2953 kgf·m |
| 75 lb-ft | 10.369 kgf·m |
| 90 lb-ft | 12.443 kgf·m |
| 100 lb-ft | 13.825 kgf·m |
| 125 lb-ft | 17.282 kgf·m |
| 150 lb-ft | 20.738 kgf·m |
| 175 lb-ft | 24.195 kgf·m |
| 200 lb-ft | 27.651 kgf·m |
| 225 lb-ft | 31.107 kgf·m |
| 250 lb-ft | 34.564 kgf·m |
| 300 lb-ft | 41.476 kgf·m |
| 350 lb-ft | 48.389 kgf·m |
| 400 lb-ft | 55.302 kgf·m |
| 450 lb-ft | 62.215 kgf·m |
| 500 lb-ft | 69.127 kgf·m |
| 600 lb-ft | 82.953 kgf·m |
| 700 lb-ft | 96.778 kgf·m |
| 800 lb-ft | 110.6 kgf·m |
| 900 lb-ft | 124.43 kgf·m |
| 1000 lb-ft | 138.25 kgf·m |
| 1200 lb-ft | 165.91 kgf·m |
| 1500 lb-ft | 207.38 kgf·m |
| 1800 lb-ft | 248.86 kgf·m |
| 2000 lb-ft | 276.51 kgf·m |
| 2500 lb-ft | 345.64 kgf·m |
| 3000 lb-ft | 414.76 kgf·m |
| 5000 lb-ft | 691.27 kgf·m |
| 7500 lb-ft | 1036.9 kgf·m |
| 10000 lb-ft | 1382.5 kgf·m |
| 15000 lb-ft | 2073.8 kgf·m |
| 20000 lb-ft | 2765.1 kgf·m |
| 25000 lb-ft | 3456.4 kgf·m |
| 50000 lb-ft | 6912.7 kgf·m |
| 75000 lb-ft | 10369 kgf·m |
| 100000 lb-ft | 13825 kgf·m |
| 200000 lb-ft | 27651 kgf·m |
| 500000 lb-ft | 69127 kgf·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 kilogram-force-meter (kgf·m) equals 9.80665 N·m — one kilogram subjected to standard gravity, acting at a one-meter lever arm. Common in older European automotive documentation and in some industrial torque-wrench scales.
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