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Automotive and fastener torque converter for Newton-meters (N·m), pound-feet (lb·ft), pound-inches, kilogram-centimeters, and kg·m.
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Generated on May 23, 2026
Automotive and fastener torque converter for Newton-meters (N·m), pound-feet (lb·ft), pound-inches, kilogram-centimeters, and kg·m.
A torque converter translates between the units used for rotational force: newton-meters (SI), pound-feet (imperial, common in US automotive), pound-inches (small precision work), kilogram-centimeters (small motors), and kilogram-meters (heavy machinery). Torque is how hard something twists — your engine's ability to pull, your wrench's ability to crack loose a rusted bolt, your motor's ability to spin a heavy load. Getting torque values right matters for everything from tightening a head bolt to sizing an industrial servo.
Formula
1 N·m ≈ 0.7376 lb·ft. 1 lb·ft = 1.35582 N·m. 1 kg·m = 9.80665 N·m. 1 kg·cm = 9.80665 × 10⁻² N·m.Torque conversions come up at one of two specific Pakistani moments. First: you're reading a US-spec car repair manual or YouTube tutorial that says "torque the cylinder head bolts to 65 lb·ft" and you need to translate that to N·m (88 N·m) because your torque wrench is metric. Or you're reading a Toyota Hilux owner's manual that quotes lug nut torque in kgf·m (11 kgf·m for example) and your torque wrench reads in N·m (108 N·m) — same physical specification, three different units depending on which country the manual was written in. Second: you're shopping for a car and the brochure quotes "400 N·m of torque" — but how does that compare to the 295 lb·ft your American friend's car has, and which is actually more powerful (they're the same)? Torque is what you feel when you press the accelerator and the car shoves you back — it's rotational pulling power. Horsepower is torque multiplied by speed. Diesel trucks and modern turbocharged engines feel powerful because of high torque at low RPM; Formula 1 cars and traditional sports cars feel fast because of high horsepower at high RPM. Honest take: when reading any spec sheet, ignore peak horsepower and look at peak torque AND the RPM where it occurs. An engine with 300 N·m at 1,500 RPM (turbo-diesel) feels dramatically different from one with 300 N·m at 5,500 RPM (high-revving petrol) even though the peak number is identical.
A torque converter translates between the units used for rotational force: newton-meters (SI), pound-feet (imperial, common in US automotive), pound-inches (small precision work), kilogram-centimeters (small motors), and kilogram-meters (heavy machinery). Torque is how hard something twists — your engine's ability to pull, your wrench's ability to crack loose a rusted bolt, your motor's ability to spin a heavy load. Getting torque values right matters for everything from tightening a head bolt to sizing an industrial servo.
Torque equals force multiplied by the perpendicular lever-arm distance. So N·m = newton × meter, lb·ft = pound-force × feet. Although torque is dimensionally identical to energy (both are force × distance), torque is a directional rotational quantity (a vector) while energy is scalar — which is why we do not use joules for torque, even though the math would match. In automotive contexts, US market cars quote torque in lb·ft while European and Japanese makers quote N·m.
Common torque conversions for automotive, engineering, and fastener specification.
| N·m | lb·ft | kg·cm | in·lb |
|---|---|---|---|
| 1 | 0.738 | 10.197 | 8.851 |
| 5 | 3.688 | 50.986 | 44.25 |
| 10 | 7.376 | 101.97 | 88.51 |
| 25 | 18.44 | 254.93 | 221.3 |
| 50 | 36.88 | 509.86 | 442.5 |
| 100 | 73.76 | 1,019.7 | 885.1 |
| 200 | 147.5 | 2,039.4 | 1,770 |
| 500 | 368.8 | 5,098.6 | 4,425 |
Hand-tight on a typical nut ≈ 5 N·m (3.7 lb·ft) — finger-tight before reaching for a wrench.
Car lug nuts need ~100–140 N·m (74–103 lb·ft) — one of the most-searched torque figures.
A typical petrol car engine produces 200–400 N·m at peak — the "pulling power" you feel.
A Tesla Model S Plaid delivers over 1,000 N·m of torque instantly from zero RPM.
A car engine rated at 400 N·m produces about 295 lb·ft of torque — common in modern turbocharged 2-liter engines.
A bolt specification of 80 lb·ft equals 108.5 N·m — the torque at which most wheel lug nuts on passenger cars are tightened.
A bicycle's crank experiences roughly 100 N·m when a 75 kg rider stands on the pedal — enough to climb a steep hill.
Industrial gear motors rated at 1,000 kg·cm deliver about 98 N·m of output torque — useful for sizing conveyors.
An impact wrench rated at 1,000 ft-lb can remove most seized wheel bolts — while a cordless driver usually tops out at 40–80 N·m.
Electric vehicles like the Tesla Model S deliver up to 1,420 N·m instantly — over twice a typical sports car's internal-combustion torque.
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