Ft-lbs to Nm Converter
Type a value in foot-pounds to see it in newton-meters as you type, with the exact formula and a reference chart.
- Free
- No sign-up
- Private
- Inch-pounds
- 960 in·lb
How this was calculated
- 1 foot-pound = 1.355817948 newton-meters
- 80 × 1.355817948 = 108.46544 N·m
| ft·lb | N·m |
|---|---|
| 1 ft·lb | 1.35582 N·m |
| 5 ft·lb | 6.77909 N·m |
| 10 ft·lb | 13.5582 N·m |
| 15 ft·lb | 20.3373 N·m |
| 18 ft·lb | 24.4047 N·m |
| 20 ft·lb | 27.1164 N·m |
| 25 ft·lb | 33.8954 N·m |
| 30 ft·lb | 40.6745 N·m |
| 35 ft·lb | 47.4536 N·m |
| 40 ft·lb | 54.2327 N·m |
| 50 ft·lb | 67.7909 N·m |
| 60 ft·lb | 81.3491 N·m |
| 65 ft·lb | 88.1282 N·m |
| 70 ft·lb | 94.9073 N·m |
| 75 ft·lb | 101.686 N·m |
| 80 ft·lb | 108.465 N·m |
| 85 ft·lb | 115.245 N·m |
| 90 ft·lb | 122.024 N·m |
| 100 ft·lb | 135.582 N·m |
| 110 ft·lb | 149.14 N·m |
| 120 ft·lb | 162.698 N·m |
| 150 ft·lb | 203.373 N·m |
| 200 ft·lb | 271.164 N·m |
| 250 ft·lb | 338.954 N·m |
| 300 ft·lb | 406.745 N·m |
| 500 ft·lb | 677.909 N·m |
| N·m | ft·lb |
|---|---|
| 1 N·m | 0.737562 ft·lb |
| 5 N·m | 3.68781 ft·lb |
| 8 N·m | 5.9005 ft·lb |
| 10 N·m | 7.37562 ft·lb |
| 12 N·m | 8.85075 ft·lb |
| 15 N·m | 11.0634 ft·lb |
| 20 N·m | 14.7512 ft·lb |
| 25 N·m | 18.4391 ft·lb |
| 30 N·m | 22.1269 ft·lb |
| 35 N·m | 25.8147 ft·lb |
| 40 N·m | 29.5025 ft·lb |
| 45 N·m | 33.1903 ft·lb |
How to convert foot-pounds to newton-meters
1 foot-pound = 1.355817948 newton-meters. To convert foot-pounds to newton-meters, multiply by 1.355817948. A foot-pound (ft·lbf) is one pound-force applied one foot from the pivot, exactly 1.3558179483314 N·m. A newton-meter is a force of one newton applied one meter from the pivot.
Worked examples
- 18 foot-pounds = 24.4047 N·m (18 × 1.3558179)
- 80 foot-pounds = 108.465 N·m (80 × 1.3558179)
- 250 foot-pounds = 338.954 N·m (250 × 1.3558179)
Where this conversion comes up
Foot-pounds are used for lug nuts, engine torque and torque wrenches in the US; newton-meters for torque wrench settings, engine and electric-motor specs outside the US. A foot-pound is 1.3558 N·m, so 80 ft·lb on a lug nut is 108 N·m and a 250 ft·lb engine makes 339 N·m. Set a metric torque wrench to the N·m figure, not the ft·lb figure.
Quick estimate
Multiply by 1.36 (or add a third and then 1.7%).
Common mistakes
- Dividing instead of multiplying. A newton-meter is smaller than a foot-pound, so the number of newton-meters must come out larger: 18 foot-pounds = 24.4047 N·m.
- Rounding too early. Keep the full factor until the last step; rounding 1.36 to 1.4 first puts large values noticeably off.
Going the other way? Use the nm to ft-lbs converter.
Frequently asked questions
How do you convert foot-pounds to newton-meters?
Multiply the foot-pounds by 1.355817948. For example, 80 foot-pounds is 108.465 newton-meters.
How many newton-meters are in one foot-pound?
One foot-pound is 1.355817948 newton-meters. A foot-pound (ft·lbf) is one pound-force applied one foot from the pivot, exactly 1.3558179483314 N·m.
What is 250 foot-pounds in newton-meters?
250 foot-pounds is 338.954 newton-meters.
Is there a quick way to estimate foot-pounds to newton-meters?
Multiply by 1.36 (or add a third and then 1.7%).