N·m to ft·lb Calculator — Newton-Meters to Foot-Pounds Torque Converter
Enter a torque value in Newton-meters or foot-pounds and instantly convert in either direction. Also shows inch-pounds and kgf·m equivalents — handy for engine specs, wheel nuts, and fastener torque tables.
Conversion direction
N·m
1 N·m ≈ 0.7376 ft·lb • 1 ft·lb ≈ 1.3558 N·m
- 1
Input (N·m)
100 - 2
Conversion factor
0.73756211 N·m = 0.7375621 ft·lb exactly. - 3
Result in ft·lb
100 × 0.7375621 = 73.7562
How does this calculator work?
Torque conversion: 1 N·m ≈ 0.7376 ft·lb; 1 ft·lb ≈ 1.3558 N·m. To convert N·m → ft·lb multiply by 0.7376; to convert ft·lb → N·m multiply by 1.3558. Also shows inch-pounds (1 ft·lb = 12 in·lb) and kgf·m (1 kgf·m ≈ 9.807 N·m).
Formula
How this is calculated
Torque (moment of force) is the rotational equivalent of linear force — it describes how hard something twists around an axis. The SI unit is the Newton-meter (N·m): one newton of force applied perpendicularly at one metre from the pivot. The foot-pound (ft·lb) is the Imperial/US customary unit, using a pound-force (lbf ≈ 4.44822 N) at one foot (0.3048 m) from the pivot.
The exact conversion is derived from these definitions: 1 ft·lb = 1 lbf × 1 ft = 4.44822 N × 0.3048 m = 1.3558179 N·m. Dividing gives 1 N·m = 1 / 1.3558179 ≈ 0.7375621 ft·lb. All conversions are exact and symmetric — entering any value in N·m and converting back to ft·lb yields the original.
Foot-pounds are the standard unit in US automotive service manuals (engine bolts, cylinder-head torque, lug nuts), while Newton-meters are used everywhere else. For small fasteners, inch-pounds (in·lb) are common; this calculator also shows that value since 1 ft·lb = 12 in·lb. A kgf·m equivalent is included for regions still using kilogram-force units in older workshop literature.
Frequently asked questions
Multiply by 0.7375621. For example, 100 N·m = 100 × 0.7376 ≈ 73.76 ft·lb. This is the most common conversion when reading European or Japanese vehicle specifications and cross-referencing a US torque wrench.
Multiply by 1.3558. For example, 80 ft·lb = 80 × 1.3558 ≈ 108.5 N·m. US automotive manuals list torque in ft·lb; this is the conversion needed to set a torque wrench calibrated in N·m.
Dimensionally yes — both are kg·m²/s² — but they describe different physical quantities. A Joule measures energy (a scalar); a Newton-meter of torque describes a rotational tendency (a vector). Never interchange them in calculations.
Also known as
TG we-Calculate Editorial Team. (2026). N·m to ft·lb Calculator — Newton-Meters to Foot-Pounds Torque Converter [Online calculator]. TG we-Calculate. https://we-calculate.com/calculator/nm-to-ft-lb-calculator
TG we-Calculate Editorial Team. "N·m to ft·lb Calculator — Newton-Meters to Foot-Pounds Torque Converter." TG we-Calculate. 2026. https://we-calculate.com/calculator/nm-to-ft-lb-calculator.
TG we-Calculate Editorial Team, "N·m to ft·lb Calculator — Newton-Meters to Foot-Pounds Torque Converter," TG we-Calculate, 2026. [Online]. Available: https://we-calculate.com/calculator/nm-to-ft-lb-calculator
@misc{wecalculate_nm_to_ft_lb_calculator, title = {N·m to ft·lb Calculator — Newton-Meters to Foot-Pounds Torque Converter}, author = {{TG we-Calculate Editorial Team}}, howpublished = {\url{https://we-calculate.com/calculator/nm-to-ft-lb-calculator}}, year = {2026}, note = {TG we-Calculate} }
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