Watt Hours to Foot Pounds
Convert watt hours to foot pounds instantly — one watt-hour is 2655.22 foot pounds.
| Watt Hours | Foot Pounds |
|---|---|
| 1 Wh | 2655.223737 ft·lb |
| 2 Wh | 5310.447475 ft·lb |
| 3 Wh | 7965.671212 ft·lb |
| 5 Wh | 13276.118687 ft·lb |
| 10 Wh | 26552.237374 ft·lb |
| 25 Wh | 66380.593435 ft·lb |
| 50 Wh | 132761.18687 ft·lb |
| 100 Wh | 265522.37374 ft·lb |
How to use
- Enter a value in the Watt Hours field.
- The Foot Pounds figure appears immediately — no button to press.
- Typing in the Foot Pounds field converts back to Watt Hours the same way.
- Use the reference table for the values that come up most often.
Watt Hours to Foot Pounds formula
Converting watt hours to foot pounds is a single multiplication by 2655.22374.
ft·lb = Wh × 2655.22374
Why this factor: the watt-hour and the foot-pound are both defined against the joule, so dividing one definition by the other gives 2655.22374 directly. Both definitions are set out in full below.
To go the other way, divide by 2655.22374 — or use the Foot Pounds to Watt Hours converter, which is the same calculation reversed.
Worked example
Take 100 Wh and multiply by the factor 2655.22374: the result is 265522.37374 ft·lb.
100 Wh × 2655.22374 = 265522.37374 ft·lb
The converter above does this for any value you type, in either direction.
What is a watt-hour?
A watt-hour is the energy delivered by one watt of power sustained for one hour.
Definition: Exactly 3,600 joules.
Where it is used: Battery capacity for laptops, e-bikes and power tools, and small-scale energy metering.
Worth knowing: Airline lithium-battery limits are set in watt-hours, which is why laptop and power-bank capacities are labelled in Wh.
What is a foot-pound?
A foot-pound is the work done by one pound-force acting through one foot.
Definition: About 1.3558179 joules.
Where it is used: US mechanical work and torque figures, fastener specifications, and firearm muzzle energy.
Worth knowing: As a torque unit it is properly 'pound-foot' (lbf·ft); as an energy unit it is 'foot-pound'. The numbers coincide but the quantities differ.
Watt Hours vs Foot Pounds
The watt-hour is a specialized unit while the foot-pound is a US customary unit. That is why the factor between them is not a round number: the two systems were defined independently and only later tied together by exact agreement.
Frequently asked questions
How many foot pounds are in a watt-hour?
One watt-hour equals 2655.22374 foot pounds.
What is the formula to convert watt hours to foot pounds?
Multiply the number of watt hours by 2655.22374. To reverse it, divide by 2655.22374 instead.
How do I convert foot pounds back to watt hours?
Divide by 2655.22374, which is the same as multiplying by 0.000376616097.
How many foot pounds are in 10 watt hours?
10 Wh works out to 26552.237374 ft·lb.
Is there anything to watch out for with watt hours?
Airline lithium-battery limits are set in watt-hours, which is why laptop and power-bank capacities are labelled in Wh.
How is the watt-hour defined?
Exactly 3,600 joules.