Newton Meters to Pound Feet Converter
Convert torque from N·m to lb-ft instantly — 100 N·m = 73.76 lb-ft (1 lb-ft = 1.3558 N·m). For wrench settings and engine specs, both ways.
About the Newton Meters to Pound Feet Converter
This free newton meters to pound feet converter uses 1 lb-ft = 1.3558179483 N·m, so 100 N·m equals 73.76 lb-ft. Enter torque in either unit and the other updates instantly.
Torque specs are where the two unit systems collide daily: service manuals for Japanese and European cars list N·m, while many torque wrenches — and American engine specs — read lb-ft. Getting it right matters: lug nuts typically need 100–140 N·m (75–103 lb-ft), spark plugs 20–30 N·m (15–22 lb-ft), and overtightening because you confused units can strip threads or warp brake rotors.
The reference table covers the workshop range from small fasteners to the 400+ N·m torque of diesel engines.
How to Use the Newton Meters to Pound Feet Converter
- 1Enter torque in newton meters — pound-feet appear instantly.
- 2Or type lb-ft to convert back to N·m.
- 3Copy the result, or check the table against your torque wrench scale.
Frequently Asked Questions
How many lb-ft is 100 N·m?
100 N·m equals 73.76 lb-ft. Common workshop values: 50 N·m = 36.9 lb-ft, 110 N·m = 81.1 lb-ft (a typical lug nut spec) and 150 N·m = 110.6 lb-ft.
What is the exact N·m to lb-ft conversion factor?
1 lb-ft = 1.3558179483 N·m, so lb-ft = N·m ÷ 1.35582. For a quick estimate, multiply N·m by 0.7376 — or knock off a quarter and a bit more.
What torque should wheel lug nuts be in both units?
Most passenger cars specify 100–140 N·m, which is 74–103 lb-ft; around 110 N·m (81 lb-ft) is a common figure for sedans. Always confirm your vehicle's manual — alloy wheels and trucks differ — and tighten in a star pattern.
Are lb-ft and ft-lb the same thing?
For fastener torque, yes — pound-feet and foot-pounds both mean the same twisting force and are used interchangeably on wrench scales. Strictly, physicists reserve foot-pound for energy (like the joule) and pound-foot for torque, but every automotive spec treats them as identical.
How much is 400 N·m of engine torque in lb-ft?
400 N·m equals 295 lb-ft — typical for a modern turbo-diesel SUV. Other engine figures: 250 N·m = 184 lb-ft (hot hatch), 500 N·m = 369 lb-ft (performance V8 or large diesel).