A watt-hour is 3,600 joules.
Watt-hours to Foot-pounds Converter — Wh to ft-lb
Convert Watt-hour (Wh) to Foot-pound (ft-lb) using the exact conversion factor (1 watt-hour = 2,655.223737 foot-pound). See the formula, worked examples, conversion table, and common uses.
Watt-hours to Foot-pounds converter
Converter
Energy Converter
Convert joules, calories, kilowatt-hours, BTU, electronvolts, therms, and mechanical work units.
Context values
Some unit families need one extra value for a physically accurate result.
Work from one pound-force over one foot.
Result = input x 3600 / 1.355817948.
Energy uses the joule as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Watt-hours to Foot-pounds
Watt-hour and Foot-pound both measure energy, and the conversion is especially useful for comparing nutrition labels (kilocalories) against scientific energy figures (joules). Watt-hour is most often used for phone, laptop, and power-bank battery capacity ratings.
Formula
foot-pounds = watt-hours × 2655.2237374
This factor comes from each unit's defined relationship to the category's base unit: 1 watt-hour equals 3600 base units, and 1 foot-pound equals 1.35581794833 base units, so dividing one by the other gives the direct watt-hour-to-foot-pound factor of 2655.2237374.
Simple example
1 Wh × 2655.223737 = 2,655.223737 ft-lb
1 watt-hour = 2,655.223737 foot-pounds.
Real-world example
100 Wh × 2655.223737 = 265,522.3737 ft-lb
100 watt-hours = 265,522.3737 foot-pounds.
Conversion table
| Watt-hour (Wh) | Foot-pound (ft-lb) |
|---|---|
| 1 Wh | 2,655.223737 ft-lb |
| 10 Wh | 26,552.23737 ft-lb |
| 100 Wh | 265,522.3737 ft-lb |
| 500 Wh | 1,327,611.869 ft-lb |
| 1,000 Wh | 2,655,223.737 ft-lb |
| 2,000 Wh | 5,310,447.475 ft-lb |
Reverse conversion: Foot-pound to Watt-hour
1 ft-lb × 0.0003766160968 = 0.0003766161 Wh
1 foot-pound = 0.0003766161 watt-hours.
watt-hours = foot-pounds × 0.000376616096759
For a page dedicated to this direction, see Foot-pound to Watt-hour.
Understanding the Watt-hour
Watt-hour (Wh) measures energy. The energy delivered by one watt of power sustained for one hour — equal to 3,600 joules. It is classified as a metric derived energy unit.
Where it's used: Universal — standard consumer-electronics and battery energy unit worldwide
Wh vs. kWh. The same unit at different scales: 1,000 Wh equals 1 kWh. Wh suits small consumer-electronics batteries; kWh is used for household electricity billing and larger energy storage.
Uses of the Watt-hour today
- Phone, laptop, and power-bank battery capacity ratings
- Electric-vehicle battery capacity specifications
- Small-scale renewable energy (solar panel) output ratings
Understanding the Foot-pound (ft-lb)
Work from one pound-force over one foot.
Watt-hour — sources
- BIPM SI Brochure — Watt-hour as a common energy unit derived from the coherent SI units watt and second (via the hour).
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many foot-pounds are in 1 watt-hour?
1 watt-hour equals 2,655.223737 foot-pounds, using the exact defined conversion factor rather than an estimate.
How do I convert watt-hour to foot-pound?
Multiply the watt-hour value by 2655.223737. The converter above does this instantly to whatever precision you set.
How do I convert foot-pound back to watt-hour?
Use the reverse factor: 1 foot-pound equals 0.0003766161 watt-hours. You can also use the swap control in the converter above to flip the direction instantly.
What is a watt-hour?
Watt-hour (Wh) measures energy. The energy delivered by one watt of power sustained for one hour — equal to 3,600 joules. It is classified as a metric derived energy unit.
What is a foot-pound?
Foot-pound (ft-lb) is a unit of energy.
Is the watt-hour to foot-pound conversion exact?
Yes. Both watt-hour and foot-pound are defined by fixed standards rather than physical artifacts, so the factor of 2655.223737 used above is exact to as many digits as you choose to display.
What is the difference between wh vs. kwh?
The same unit at different scales: 1,000 Wh equals 1 kWh. Wh suits small consumer-electronics batteries; kWh is used for household electricity billing and larger energy storage.
Where is the watt-hour still used today?
Universal — standard consumer-electronics and battery energy unit worldwide