newton meter [N*m] Unit Converter

Definition of newton meter [N*m] unit

A newton metre (N·m) is the SI unit of torque and, equivalently, a joule when describing energy or work. It represents one newton of force acting through a one-metre displacement in the force’s direction.

History of newton meter [N*m] unit

The newton metre emerged from the modern metric system and the development of the SI, whose mechanical units are built from the metre, kilogram, and second. The newton was named after Isaac Newton and formally adopted as the SI unit of force in 1948. Because work equals force multiplied by displacement, one newton metre was recognized as one joule, the joule having been named for physicist James Prescott Joule. The SI formally established the joule as the preferred energy name, while newton metre remains customary for torque.

Applications of newton meter [N*m] unit

In energy calculations, a newton metre expresses mechanical work, such as lifting an object or driving a machine, and is numerically equal to a joule. In engineering, it more commonly measures torque: a 10 N·m motor applies 10 newtons at a one-metre lever arm. Torque specifications appear for engines, shafts, fasteners, and electric motors.

Complete list of newton meter [N*m] unit conversion