Foot-pounds to Kilojoules converter

To convert foot-pounds to kilojoules, enter the value in the first field. The result in kilojoules is calculated automatically using the exact conversion factor.

1 ft·lbf ≈ 0.00135581794833 kJ
1 kJ ≈ 737.562149277 ft·lbf

Formula: kJ ≈ ft·lbf × 0.00135581794833
ft·lbf ≈ kJ × 737.562149277

Definitions: 1 ft·lbf = 1.35581794833 J; 1 kJ = 1000 J

The foot-pound (ft·lbf) is the work done by a force of one pound-force over a distance of one foot, about 1.356 joules. It is used in the United States for the muzzle energy of ammunition and for impact energy, and it should not be confused with the pound-foot, a unit of torque.

The kilojoule (kJ) is 1,000 joules. It is used for food energy on nutrition labels in Australia, New Zealand and Europe, often next to kcal, and for reaction energies in chemistry.

See the conversion table with commonly used values, handy for quick reference or study.