How Do You Convert Nm to ft-lb?
Convert torque between Newton-meters (N·m), foot-pounds (ft·lb), inch-pounds (in·lb), kilogram-force meters, and more. Our free torque converter is essential for mechanics, engineers, and DIY enthusiasts working with bolt specifications and engine data.
How it works
Torque is a rotational force — the product of a force and the distance at which it is applied. 1 foot-pound (ft·lb) equals 1.35582 Newton-meters. Bolt specifications in Europe use N·m; US manuals typically use ft·lb or in·lb. Kilogram-force meters (kgf·m) appear in older Japanese and European specifications.
Quick reference
Frequently Asked Questions
How do you convert Nm to ft-lb?
Multiply Newton-meters by 0.7376. For example, 100 N·m × 0.7376 = 73.76 ft·lb. To convert ft·lb to N·m, multiply by 1.35582.
How do you convert ft-lb to in-lb?
Multiply foot-pounds by 12. For example, 10 ft·lb = 120 in·lb. Inch-pounds are used for smaller fasteners and precision torque specifications.
What is the difference between Nm and kgf·m?
1 kgf·m equals 9.80665 N·m. Kilogram-force meters appear in older torque specifications and some Japanese vehicle manuals.
What torque is used for lug nuts?
Most passenger car lug nuts require 80–120 N·m (60–90 ft·lb). Always check your vehicle's owner manual for the exact specification, as over-torquing can damage wheel hubs.
What is torque used for?
Torque specifications are used in automotive (cylinder head bolts, lug nuts), construction (structural bolts), and manufacturing. Proper torque ensures fasteners are tightened without stripping threads or causing fatigue failure.
What is a typical tightening torque for car wheel bolts?
Most passenger car wheel bolts require 100–130 Nm (74–96 ft-lb) of torque. Always check your vehicle's manual — overtightening can warp brake discs and crack wheel studs, while undertightening can cause wheels to loosen while driving. A calibrated torque wrench is essential for wheel changes.
How much torque does a car engine produce?
A typical compact car produces 150–250 Nm (110–184 ft-lb) of torque. Family sedans range from 250–400 Nm (184–295 ft-lb). High-performance sports cars can exceed 600 Nm (443 ft-lb). Diesel engines typically produce more torque than equivalent petrol engines, which is why diesels feel stronger at low revs.
What is the difference between Nm and ft-lb?
1 ft-lb (foot-pound) = 1.3558 Nm (newton-meters). 1 Nm = 0.7376 ft-lb. Newton-meters are the SI standard used in Europe and most of the world; foot-pounds are common in the US and UK automotive industry. To convert: multiply ft-lb by 1.356 to get Nm, or divide Nm by 1.356 to get ft-lb.
What torque is needed for common DIY tasks?
Spark plugs: 15–25 Nm. Oil drain plug: 20–40 Nm. Cylinder head bolts: 60–100 Nm (varies by engine). Bicycle pedals: 35–40 Nm. Furniture assembly bolts: 5–15 Nm. Always check manufacturer specs — torque requirements vary significantly between materials, thread sizes, and applications.
Why does torque matter more than power at low speeds?
Torque is the rotational force that actually moves a vehicle, while power is the rate at which work is done. At low speeds (pulling, accelerating from standstill), high torque is more useful — it determines how easily a vehicle can start moving or tow a load. Power (HP/kW) determines top speed and sustained high-speed performance. Diesel engines excel at towing due to high low-rpm torque.