What is 200 N·m in ft·lb?

200 × 0.737562 = 147.51 ft·lb. This is a common engine torque spec — a typical 2-litre petrol engine might produce 200 N·m (≈ 148 ft·lb) at peak.

Why do American car manuals use ft·lb instead of N·m?

US automotive industry conventions predate SI adoption in North America. Service manuals now typically list both: N·m for the international edition and ft·lb for the US edition of the same publication.

Newton-Meters to Foot-Pounds Converter

1 N·m = 0.737562 ft·lb. Wheel bolt torque of 120 N·m = 88.5 ft·lb. Engine: 200 N·m = 147.5 ft·lb.

Inverse conversion

1 ft·lb = 1.35582 N·m. Engine torque: 100 ft·lb = 135.6 N·m. Wheel bolts: ~80 ft·lb = 108 N·m.

Foot-Pounds to Newton-Meters →

Formula

ft·lb = N·m × 0.737562

Worked example

To convert 200 N·m to ft·lb, multiply 200 × 0.737562 = 147.51 ft·lb.

Quick reference table

N·m	ft·lb
1	0.737562
10	7.375621
25	18.439054
50	36.878107
100	73.756215
150	110.634322
200	147.51243
300	221.268645

Unit definitions

Newton-meter (N·m)

Newton-meter (N·m) is the SI unit of torque.

Foot-pound (ft·lb)

Foot-pound (ft·lb) is an imperial torque unit common in the US automotive and engineering industries.

Common use cases

Reading international torque specs
Engine and gearbox work
Bicycle torque specs

Related guides

Torque Units Explained: Newton-Metres vs Pound-Feet vs Pound-Inches

Torque is a rotational force — the tendency of a force to cause rotation about an axis. It appears in fastener specifications, engine output ratings, and electric motor datasheets. This guide explains what torque units mean, how to convert between them, and the surprisingly easy mistake that can strip a bolt or damage an engine.

Frequently asked questions

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