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Convert Kilojoule to Foot-pound

Please provide values below to convert kilojoule [kJ] to foot-pound [ft*lbf], or vice versa.



Definition: The kilojoule is an SI (International System of Units) derived unit of energy that is equal to 1000 joules. The joule is defined as the amount of energy transferred to an object when a one newton force acts on an object in the direction movement through a distance of one meter.

History/origin: The kilojoule, like other SI derived units, uses SI prefixes to denote multiples or submultiples of the given unit. In this case, the prefix "kilo" is used to express a multiple of 1000.

Current use: In countries that have adopted SI, the kilojoule is widely used as a unit of food energy. In some cases, both kilojoules and kilocalories are displayed, though in countries such as the United States, only kilocalories are shown (often referred to as "Calories") on food labels. Aside from this everyday use, kilojoules are used within scientific contexts around the world.


Definition: A foot-pound (ft·lb or ft·lbf) is a unit of work or energy in the imperial and United States customary systems of units. It is defined as the energy transferred when a force of one pound-force is applied over a linear displacement of one foot.

History/origin: The foot-pound is an English Engineering unit that is part of the British Gravitational system, based on the foot-pound-second (FPS) system. The FPS system is built using the units of foot for length, avoirdupois pound for mass or force, and the second for time.

Current use: The foot-pound is used in countries that have not adopted the International System of Units (SI). The United States is one of the largest countries where the foot-pound is still used in certain applications, though even in the US, the joule is preferred in most scientific contexts.

Kilojoule to Foot-pound Conversion Table

Kilojoule [kJ]Foot-pound [ft*lbf]
0.01 kJ7.375621493 ft*lbf
0.1 kJ73.75621493 ft*lbf
1 kJ737.5621493 ft*lbf
2 kJ1475.1242986 ft*lbf
3 kJ2212.6864479 ft*lbf
5 kJ3687.8107465 ft*lbf
10 kJ7375.621493 ft*lbf
20 kJ14751.242986 ft*lbf
50 kJ36878.107465 ft*lbf
100 kJ73756.21493 ft*lbf
1000 kJ737562.1493 ft*lbf

How to Convert Kilojoule to Foot-pound

1 kJ = 737.5621493 ft*lbf
1 ft*lbf = 0.0013558179 kJ

Example: convert 15 kJ to ft*lbf:
15 kJ = 15 × 737.5621493 ft*lbf = 11063.4322395 ft*lbf

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