Pound-Feet to Newton-Meters Converter

About this calculator

Torque — rotational force — is measured in pound-feet (lb·ft) in US/imperial engineering and newton-metres (N·m) in the metric system, with the exact conversion 1 lb·ft = 1.35582 N·m (derived from 1 lb-force = 4.44822 N and 1 ft = 0.3048 m). A related unit, kilogram-force metres, is also common on older or non-US spec sheets.

Automotive technicians and mechanical engineers hit this conversion constantly: US car and engine specs (bolt torque, engine output) are usually quoted in lb·ft, torque wrenches sold internationally are calibrated in N·m, and getting the conversion wrong when tightening a critical fastener — a cylinder head bolt, a wheel lug — can mean a joint that's dangerously under- or over-torqued.