Torque Converter — Nm, ft-lb, kgf-m, in-lb
Convert torque between Newton-metres, foot-pounds, kilogram-force metres, and inch-pounds instantly.
Presets:
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Result
All Units
Torque Reference
| Unit | In Nm | Common Use |
|---|---|---|
| Newton-metre (Nm) | 1 | SI unit, most engineering |
| Foot-pound (ft-lb) | 1.35582 | US automotive, engines |
| kgf-m | 9.80665 | Older engineering, Asia |
| Inch-pound (in-lb) | 0.11298 | Small fasteners, electronics |
Frequently Asked Questions
What is torque?
Torque is a rotational force — it is force multiplied by the distance from the pivot point (lever arm). Formula: τ = F × r. SI unit is Newton-metre (Nm).
What is ft-lb torque used for?
Foot-pounds (ft-lb) is the US customary unit for torque, widely used in automotive specifications, engine output ratings, and fastener tightening specs in the US market.
What is kgf-m?
Kilogram-force metre (kgf-m) = 9.80665 Nm. It is commonly used in older engineering documentation and in some Asian countries. 1 kgf-m ≈ 7.233 ft-lb.
What torque is needed to tighten a wheel bolt?
Most car wheel bolts require 80–130 Nm (59–96 ft-lb) of torque. Always check your vehicle's manual for the exact specification, as over- or under-tightening can be dangerous.
How does engine torque relate to power?
Power (kW) = Torque (Nm) × RPM / 9,549. Higher torque at lower RPM means better pulling power. Higher RPM with lower torque means a high-revving engine like a sports car.