Torque Conversion Chart and Calculator
1 ft·lb = 1.35582 N·m and 1 N·m = 0.737562 ft·lb. To go from ft·lb to in·lb multiply by 12; 1 kgf·cm is 0.0980665 N·m. Type any value into the converter, or read common values off the chart.
Torque converter
Common torque values
Showing 43 of 43 rows
| N·m | ft·lb | in·lb | kgf·cm | kgf·m |
|---|---|---|---|---|
| 1.000 | 0.7376 | 8.851 | 10.20 | 0.1020 |
| 2.000 | 1.475 | 17.70 | 20.39 | 0.2039 |
| 3.000 | 2.213 | 26.55 | 30.59 | 0.3059 |
| 4.000 | 2.950 | 35.40 | 40.79 | 0.4079 |
| 5.000 | 3.688 | 44.25 | 50.99 | 0.5099 |
| 6.000 | 4.425 | 53.10 | 61.18 | 0.6118 |
| 8.000 | 5.900 | 70.81 | 81.58 | 0.8158 |
| 10.00 | 7.376 | 88.51 | 102.0 | 1.020 |
| 12.00 | 8.851 | 106.2 | 122.4 | 1.224 |
| 15.00 | 11.06 | 132.8 | 153.0 | 1.530 |
| 20.00 | 14.75 | 177.0 | 203.9 | 2.039 |
| 25.00 | 18.44 | 221.3 | 254.9 | 2.549 |
| 30.00 | 22.13 | 265.5 | 305.9 | 3.059 |
| 40.00 | 29.50 | 354.0 | 407.9 | 4.079 |
| 50.00 | 36.88 | 442.5 | 509.9 | 5.099 |
| 60.00 | 44.25 | 531.0 | 611.8 | 6.118 |
| 80.00 | 59.00 | 708.1 | 815.8 | 8.158 |
| 100.0 | 73.76 | 885.1 | 1020 | 10.20 |
| 120.0 | 88.51 | 1062 | 1224 | 12.24 |
| 150.0 | 110.6 | 1328 | 1530 | 15.30 |
| 200.0 | 147.5 | 1770 | 2039 | 20.39 |
| 250.0 | 184.4 | 2213 | 2549 | 25.49 |
| 300.0 | 221.3 | 2655 | 3059 | 30.59 |
| 400.0 | 295.0 | 3540 | 4079 | 40.79 |
| 500.0 | 368.8 | 4425 | 5099 | 50.99 |
| 6.779 | 5.000 | 60.00 | 69.13 | 0.6913 |
| 13.56 | 10.00 | 120.0 | 138.3 | 1.383 |
| 20.34 | 15.00 | 180.0 | 207.4 | 2.074 |
| 27.12 | 20.00 | 240.0 | 276.5 | 2.765 |
| 33.90 | 25.00 | 300.0 | 345.6 | 3.456 |
| 40.67 | 30.00 | 360.0 | 414.8 | 4.148 |
| 47.45 | 35.00 | 420.0 | 483.9 | 4.839 |
| 54.23 | 40.00 | 480.0 | 553.0 | 5.530 |
| 67.79 | 50.00 | 600.0 | 691.3 | 6.913 |
| 81.35 | 60.00 | 720.0 | 829.5 | 8.295 |
| 101.7 | 75.00 | 900.0 | 1037 | 10.37 |
| 108.5 | 80.00 | 960.0 | 1106 | 11.06 |
| 135.6 | 100.0 | 1200 | 1383 | 13.83 |
| 162.7 | 120.0 | 1440 | 1659 | 16.59 |
| 203.4 | 150.0 | 1800 | 2074 | 20.74 |
| 271.2 | 200.0 | 2400 | 2765 | 27.65 |
| 339.0 | 250.0 | 3000 | 3456 | 34.56 |
| 406.7 | 300.0 | 3600 | 4148 | 41.48 |
How to read the chart
Each row is one torque in every unit. Use the buttons to list round N·m values (metric specs) or round ft·lb values (inch specs), and search for the number you have.
ft·lb and lbf·ft are the same unit, as are in·lb and lbf·in. kgf·cm and kgf·m appear on older metric and Asian specs; 1 kgf·m is 100 kgf·cm.
For a value not in the table, use the converter above. To work out what torque a bolt needs in the first place, use the bolt torque calculator, and find the socket on the wrench size chart.
Conversion factors
Every factor follows from exact definitions in NIST Special Publication 811: 1 lbf = 4.4482216152605 N, 1 ft = 0.3048 m, 1 in = 0.0254 m and 1 kgf = 9.80665 N (standard gravity).
So 1 ft·lb = 4.4482216152605 × 0.3048 = 1.355817948 N·m, 1 in·lb = 0.112984829 N·m, 1 kgf·cm = 0.0980665 N·m and 1 kgf·m = 9.80665 N·m. The chart and converter keep full precision and round only for display, to 4 significant figures.
Example: A wrench reads 35 ft·lb; what is that in N·m and in·lb?
- 35 × 1.355818 = 47.4536 N·m.
- 35 × 12 = 420 in·lb.
Result: 35 ft·lb = 47.45 N·m = 420 in·lb.
Common mistakes
- Mixing up in·lb and ft·lb. They differ by 12×. Setting an in·lb spec on a ft·lb wrench over-tightens by a factor of 12 and can snap the bolt.
- Using 1.36 or 0.74 for critical joints. Fine for estimates, but use 1.3558 and 0.7376 (or the converter) when the result goes on a work instruction.
- Confusing torque with force. N·m and ft·lb are torque (force × lever arm); N and lbf are force. Do not drop the length unit.
- Rounding before converting twice. Convert once from the original spec. Converting a rounded value back and forth drifts away from the spec.
- Reading kgf·m as kgf·cm. They differ by 100×. Check the unit on the spec sheet before you set the wrench.
Printable chart
The PDF prints on US Letter or A4. The images are made from the same values as the table above: a full chart, and a 2:3 portrait version for pinning.
Frequently asked questions
How do I convert N·m to ft·lb?
Multiply by 0.737562, or divide by 1.355818. For example, 50 N·m = 36.88 ft·lb.
How do I convert ft·lb to N·m?
Multiply by 1.355818. For example, 100 ft·lb = 135.6 N·m.
How many in·lb are in a ft·lb?
Exactly 12, because there are 12 inches in a foot.
Is ft·lb the same as lb·ft?
Yes, for torque they are the same unit. Some references write lbf·ft to separate torque from the energy unit foot-pound.
How do I convert kgf·cm to N·m?
Multiply by 0.0980665. For example, 100 kgf·cm = 9.807 N·m.
See also
More reference charts
Sources
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