Newton Meter to Pound-Force Inch Conversion

Convert between Newton Meter and Pound-Force Inch quickly and accurately.

From Newton Meter

N·m

To Pound-Force Inch

lbf·in

How to Convert Newton Meter to Pound-Force Inch

Conversion Formula

1 N·m = 8.851 lbf·in

1 lbf·in = 0.113 N·m

Example

Convert 15 N·m to lbf·in:

15 N·m = 15 × 8.851 lbf·in = 132.761 lbf·in

Unit Information

Learn about the torque units you're converting between

Newton Meter

N·m

Definition

The newton meter (N·m) is the SI unit of torque, representing the rotational force produced when a force of one newton is applied perpendicularly at a distance of one meter from the pivot point. It is the fundamental unit for measuring rotational force in the International System of Units.

History/Origin

The newton meter was established as part of the SI system in 1960, derived from the fundamental units of force (newton) and length (meter). It replaced various historical torque units and became the international standard for measuring rotational force in scientific and engineering applications worldwide.

Current Use

Widely used in mechanical engineering, automotive design, robotics, and physics to calculate torque in engines, motors, and other rotating machinery. It is essential for understanding rotational equilibrium, motion, and the design of mechanical systems.

Multiplier

Offset

Pound-Force Inch

lbf·in

Definition

The pound-force inch (lbf·in) is an imperial unit of torque, equal to 0.1129848333 newton meters. It represents the rotational force produced by one pound-force applied at one inch from the pivot point.

History/Origin

This unit was commonly used in the US customary system for smaller torque measurements in precision engineering and manufacturing. It provided a practical unit for inch-scale applications in mechanical design.

Current Use

Widely used in precision manufacturing, small mechanical devices, and laboratory equipment where inch-scale measurements and pound-force applications are standard in US engineering practice.

Multiplier

0.113

Offset