Dedicated converter

newtons to pound ft

Pound-feet is how American spec sheets write torque. Feed this converter newton-meters — from an engine dyno chart or a fastener table — and it returns pound-ft exactly, working included.

The Converter

N·m → lb·ft
N·m
lb·ft
Precision
Quick values

Total Working

Formula T(lb·ft) = T(N·m) × 0.7375621493
Substitute
Result
1 N·m = 0.7375621493 lb·ft
Newton-meters (N·m) Pound-feet (lb·ft)
50 36.8781
100 73.7562
135.6 100.0134
200 147.5124
250 184.3905
300 221.2686
400 295.0249
500 368.7811
542 399.7587
1,000 737.5621

The exact factor

1 N·m = 0.7375621493 lb·ft

Derived from the defined constants 1 lb = 0.45359237 kg and gₙ = 9.80665 m/s² — no measurement error, only display rounding.

Master converter

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The pound-ft conversion

lb·ft = N·m × 0.7375621493, exact. Handy anchors: 100 N·m = 73.76 lb·ft, 135.6 N·m = 100 lb·ft, 500 N·m = 368.78 lb·ft.

The reverse trip multiplies by 1.3558179 — worth remembering as “about 1.36” when reading US car reviews with a metric head.

Interpreting torque figures

Peak engine torque tells you pulling power at one rpm point; its converted value carries the same meaning. A US-quoted “400 lb·ft” diesel matches a European “542 N·m” brochure — same engine, two languages.

Gearing multiplies torque: 300 N·m (221.3 lb·ft) at the crank through a 4:1 first gear becomes 1,200 N·m (885.1 lb·ft) at the wheels, before losses.

Questions, answered

Frequently asked

What is 250 N·m in pound ft? +
250 × 0.7375621 = 184.39 lb·ft.
Are pound-ft and foot-pounds interchangeable? +
Numerically yes. Editors prefer lb·ft for engine torque and ft·lb for wrench settings, but 1:1 either way.
What's a memorable equivalence? +
135.6 N·m = 100 lb·ft exactly (well, to one decimal) — a clean anchor for mental math.
The collection

Every converter

Dedicated pages for every force, torque, and pressure conversion — each with its own calculator, exact factor, and worked examples.