Convert Watt-hours to Foot-pounds
1 watt-hour (Wh) equals 2655.223737 foot-pounds (ft·lbf).
1 Wh = 2655.223737 ft·lbf
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk watt-hour to foot-pound converter to paste a column from Excel.
How to Convert Watt-hour to Foot-pound
- 1 Wh = 2655.223737 ft·lbf
- 1 ft·lbf = 0.0003766160968 Wh
- Example: convert 15 Wh to ft·lbf: 15 Wh = 15 × 2655.223737 ft·lbf = 39828.35606 ft·lbf
Formula
ft·lbf = Wh × 2655.223737398
Derivation from SI units:
- 1 Wh = 1 W × 3600 s = 3600 J
- 1 ft·lbf = 0.3048 m × 4.4482216152605 N = 1.3558179483314 J
- 1 Wh = 3600 J ÷ 1.355817948331 J per ft·lbf = 2655.223737398 ft·lbf
Both units are defined exactly, so the factor is exact. Watt-hour definition: watt-hour; Foot-pound definition: foot-pound.
Worked examples
- A reading of 20 Wh converts to 53104.47475 ft·lbf.
20 Wh × 2655.223737 = 53104.47475 ft·lbf - A value of 100 Wh is 265522.3737 ft·lbf.
100 Wh × 2655.223737 = 265522.3737 ft·lbf
Watt-hour to Foot-pound conversion table
| Watt-hours (Wh) | Foot-pounds (ft·lbf) |
|---|---|
| 1 Wh | 2655.223737 ft·lbf |
| 5 Wh | 13276.11869 ft·lbf |
| 10 Wh | 26552.23737 ft·lbf |
| 15 Wh | 39828.35606 ft·lbf |
| 20 Wh | 53104.47475 ft·lbf |
| 50 Wh | 132761.1869 ft·lbf |
| 60 Wh | 159313.4242 ft·lbf |
| 75 Wh | 199141.7803 ft·lbf |
| 100 Wh | 265522.3737 ft·lbf |
| 160 Wh | 424835.798 ft·lbf |
| 500 Wh | 1327611.869 ft·lbf |
| 1000 Wh | 2655223.737 ft·lbf |
Where it's used
Watt-hours are used for battery capacity (phone ≈ 15 Wh; airline limit 100 Wh per power bank), while foot-pounds appear in muzzle energy of firearms and air rifles. Both measure energy, work and heat, so the conversion is a fixed factor.
Watt-hour to other energy units
| Conversion | 1 Wh equals |
|---|---|
| watt-hour to joule | 3600 J |
| watt-hour to kilojoule | 3.6 kJ |
| watt-hour to megajoule | 0.0036 MJ |
| watt-hour to calorie | 860.4206501 cal |
| watt-hour to kilocalorie | 0.8604206501 kcal |
| watt-hour to kilowatt-hour | 0.001 kWh |
| watt-hour to BTU | 3.412141633 BTU |
| watt-hour to therm | 0.00003412956341 thm |
| watt-hour to electronvolt | 2.246943267 × 10²² eV |
| watt-hour to foot-pound | 2655.223737 ft·lbf |
| watt-hour to erg | 36000000000 erg |
Frequently asked questions
How many foot-pounds are in 1 watt-hour?
1 Wh = 2655.223737 ft·lbf.
How do I convert watt-hours to foot-pounds?
Multiply the value in Wh by 2655.223737. For example, 15 Wh × 2655.223737 = 39828.35606 ft·lbf.
Is the Wh to ft·lbf conversion exact?
Yes. Both units are defined exactly, so the ratio is exact; its decimal form does not terminate and is shown here to 10 significant figures (more with the precision selector).
Sources
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "watt hour (W·h)".
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "foot pound-force (ft·lbf)".
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Watt-hours to Foot-pounds. Retrieved October 17, 2026, from https://scientificconverters.com/energy/watt-hours-to-foot-pounds/
IEEE
Scientific Converters, "Convert Watt-hours to Foot-pounds," scientificconverters.com. Accessed: Oct. 17, 2026. [Online]. Available: https://scientificconverters.com/energy/watt-hours-to-foot-pounds/