How to convert calories to foot-pounds
To convert a measurement in calories to foot-pounds, multiply the value by 3.08596. The conversion factor comes from the relationship between both units and the joule.
For example, to convert 5 cal to foot-pounds: 5 × 3.08596 = 15.4298 ft·lb.
What is a calorie?
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.
What is a foot-pound?
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.
Calories to foot-pounds worked examples
Here are some common values converted:
1 cal = 3.08596 ft·lb 5 cal = 15.4298 ft·lb 10 cal = 30.8596 ft·lb 50 cal = 154.298002 ft·lb 100 cal = 308.596003 ft·lb
Frequently asked questions
How many foot-pounds are in one calorie?
One calorie (cal) equals 3.08596 foot-pounds (ft·lb). Multiply any value in calories by 3.08596 to convert to foot-pounds.
How do I convert calories to foot-pounds?
Multiply the value in calories by 3.08596. For example, 5 cal × 3.08596 = 15.4298 ft·lb.
How do I convert foot-pounds to calories?
Multiply the value in foot-pounds by 0.32404826681, or divide by 3.08596. Use the swap button on the converter above to reverse the direction.
Is the calorie to foot-pound conversion exact?
The thermochemical calorie is defined as exactly 4.184 J and the BTU as 1055.056 J. Conversions between SI energy units are exact.
What is the formula for calories to foot-pounds?
The formula is: ft·lb = cal × 3.08596. This comes from the definition of both units relative to the joule.