Foot-pounds to Calories Converter

To convert a measurement in foot-pounds to calories, multiply the value by 0.32404826681. The conversion factor comes from the relationship between both units and the joule.

For example, to convert 5 ft·lb to calories: 5 × 0.32404826681 = 1.620241 cal.

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.

A calorie (small calorie) is the energy needed to raise the temperature of one gram of water by one degree Celsius, defined as exactly 4.184 joules. The calorie originated in early-19th-century thermodynamics. The thermochemical calorie, fixed at exactly 4.184 J, is the modern standard, though it is often confused with the larger food Calorie (kilocalorie).

Common uses of calories include: Chemistry and thermodynamics; Heat-of-reaction measurements; Physics heat-transfer problems; Historical energy references.

Here are some common values converted:

1 ft·lb = 0.32404826681 cal 5 ft·lb = 1.620241 cal 10 ft·lb = 3.240483 cal 50 ft·lb = 16.202413 cal 100 ft·lb = 32.404827 cal