Foot-pound to Kilojoule Conversion

Convert between Foot-pound and Kilojoule quickly and accurately.

ft⋅lbf
kJ

How to Convert Foot-pound to Kilojoule

Conversion Formula

1 ft⋅lbf = 0.001 kJ
1 kJ = 737.562 ft⋅lbf

Example

Convert 15 ft⋅lbf to kJ:

15 ft⋅lbf = 15 × 0.001 kJ = 0.02 kJ

Unit Information

Learn about the energy units you're converting between

Foot-pound

ft⋅lbf

Definition

A foot-pound (symbol: ft⋅lbf) is a unit of energy or work in the imperial system, equal to approximately 1.356 joules. It represents the work done when a force of one pound-force moves an object one foot in the direction of the force.

History/Origin

The foot-pound was developed in the British imperial system for measuring mechanical work and energy. It became widely used in engineering and mechanical applications, particularly in the United States and other countries using imperial units.

Current Use

Foot-pounds are used in mechanical engineering for measuring torque and work, in automotive industry for engine specifications, in ballistics for projectile energy, and in mechanical systems for energy transfer calculations.

Multiplier

1.356

Offset

0

Kilojoule

kJ

Definition

A kilojoule (symbol: kJ) is a unit of energy equal to 1,000 joules. It is commonly used for measuring larger amounts of energy in food, exercise, and industrial applications. One kilojoule equals approximately 0.239 kilocalories.

History/Origin

The kilojoule was introduced as a practical unit for measuring larger energy quantities in the metric system. It became widely used in the late 20th century for food labeling and energy consumption measurements.

Current Use

Kilojoules are extensively used in nutrition labeling worldwide, exercise physiology for measuring energy expenditure, industrial energy consumption monitoring, and scientific research for measuring moderate energy quantities.

Multiplier

1000

Offset

0

Foot-pound to Kilojoule Conversion Table

Foot-pound [ft⋅lbf] Kilojoule [kJ]
1 ft⋅lbf 0.001356 kJ
10 ft⋅lbf 0.013558 kJ
25 ft⋅lbf 0.033895 kJ
50 ft⋅lbf 0.067791 kJ
100 ft⋅lbf 0.135582 kJ
0 ft⋅lbf 0E+0 kJ
-10 ft⋅lbf -0.013558 kJ
-40 ft⋅lbf -0.054233 kJ

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