Pound-Force Foot to Pound-Force Inch Conversion

Convert between Pound-Force Foot and Pound-Force Inch quickly and accurately.

From Pound-Force Foot

lbf·ft

To Pound-Force Inch

lbf·in

How to Convert Pound-Force Foot to Pound-Force Inch

Conversion Formula

1 lbf·ft = 12 lbf·in

1 lbf·in = 0.083 lbf·ft

Example

Convert 15 lbf·ft to lbf·in:

15 lbf·ft = 15 × 12 lbf·in = 180 lbf·in

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

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