How to convert watt-hours to foot-pounds
To convert a measurement in watt-hours to foot-pounds, multiply the value by 2,655.2237. The conversion factor comes from the relationship between both units and the joule.
For example, to convert 5 Wh to foot-pounds: 5 × 2,655.2237 = 13,276.1187 ft·lb.
What is a watt-hour?
A watt-hour is the energy delivered by one watt of power over one hour, equal to 3,600 joules. The watt-hour emerged with the electrical industry as a practical measure of energy use over time. It underpins the kilowatt-hour that appears on electricity bills worldwide.
Common uses of watt-hours include: Battery capacity ratings; Small electronics energy use; Solar panel and storage sizing; Portable power station specifications.
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.
Watt-hours to foot-pounds worked examples
Here are some common values converted:
1 Wh = 2,655.2237 ft·lb 5 Wh = 13,276.1187 ft·lb 10 Wh = 26,552.2374 ft·lb 50 Wh = 132,761.1869 ft·lb 100 Wh = 265,522.3737 ft·lb
Frequently asked questions
How many foot-pounds are in one watt-hour?
One watt-hour (Wh) equals 2,655.2237 foot-pounds (ft·lb). Multiply any value in watt-hours by 2,655.2237 to convert to foot-pounds.
How do I convert watt-hours to foot-pounds?
Multiply the value in watt-hours by 2,655.2237. For example, 5 Wh × 2,655.2237 = 13,276.1187 ft·lb.
How do I convert foot-pounds to watt-hours?
Multiply the value in foot-pounds by 0.000376616097, or divide by 2,655.2237. Use the swap button on the converter above to reverse the direction.
Is the watt-hour 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 watt-hours to foot-pounds?
The formula is: ft·lb = Wh × 2,655.2237. This comes from the definition of both units relative to the joule.