Pound-Force Foot to Newton Millimeter Conversion

Convert between Pound-Force Foot and Newton Millimeter quickly and accurately.

From Pound-Force Foot

lbf·ft

To Newton Millimeter

N·mm

How to Convert Pound-Force Foot to Newton Millimeter

Conversion Formula

1 lbf·ft = 1355.818 N·mm

1 N·mm = 0.001 lbf·ft

Example

Convert 15 lbf·ft to N·mm:

15 lbf·ft = 15 × 1355.818 N·mm = 20337.27 N·mm

Unit Information

Learn about the torque units you're converting between

Pound-Force Foot

lbf·ft

Definition

The pound-force foot (lbf·ft) is an imperial unit of torque, commonly known as foot-pound. It represents the rotational force produced by one pound-force applied at one foot from the pivot point.

History/Origin

This unit is a cornerstone of the US customary system for rotational dynamics. It has a long history of use in mechanical engineering, particularly in the automotive, aerospace, and manufacturing industries.

Current Use

Predominantly used in the United States for engineering calculations, especially in contexts like engine torque, fastener tightening, and machinery design where imperial units for force and length are standard.

Multiplier

1.356

Offset

Newton Millimeter

N·mm

Definition

The newton millimeter (N·mm) is a metric unit of torque, equal to 0.001 newton meters. It represents the rotational force produced when a force of one newton is applied perpendicularly at a distance of one millimeter from the pivot point.

History/Origin

This unit was developed as a submultiple of the newton meter for very precise torque measurements. It became important in precision engineering and manufacturing where millimeter-scale measurements are standard.

Current Use

Commonly used in precision manufacturing, micro-mechanics, and laboratory instruments where very small torque values need to be measured accurately. It is essential for fine mechanical adjustments and precision assembly work.

Multiplier

0.001

Offset