Kilojoules to Foot-pounds Converter

To convert a measurement in kilojoules to foot-pounds, multiply the value by 737.562149. The conversion factor comes from the relationship between both units and the joule.

For example, to convert 5 kJ to foot-pounds: 5 × 737.562149 = 3,687.8107 ft·lb.

A kilojoule equals 1,000 joules and is the standard metric unit for expressing food energy on nutrition labels in most of the world. As metric countries adopted SI units for food labeling, the kilojoule replaced the food calorie on packaging in regions such as Australia, New Zealand, and the European Union (shown alongside kcal).

Common uses of kilojoules include: Food energy on nutrition labels; Dietary and exercise energy tracking; Chemical reaction energy (enthalpy); Battery and mechanical energy specs.

A foot-pound is an imperial unit of energy equal to the work done when a force of one pound-force acts through a distance of one foot, about 1.356 joules. The foot-pound comes from imperial mechanics and is still used in the US for torque and energy, notably to describe the muzzle energy of firearms and the output of engines.

Common uses of foot-pounds include: Firearm muzzle energy; Torque specifications (as ft·lbf); Mechanical work in imperial units; Engine and tool energy ratings.

Here are some common values converted:

1 kJ = 737.562149 ft·lb 5 kJ = 3,687.8107 ft·lb 10 kJ = 7,375.6215 ft·lb 50 kJ = 36,878.1075 ft·lb 100 kJ = 73,756.2149 ft·lb