Convert BTU per Hour to Foot-pounds per Second
1 BTU per hour (BTU/h) equals 0.2161581284 foot-pounds per second (ft·lbf/s).
1 BTU/h = 0.2161581284 ft·lbf/s
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk BTU per hour to foot-pound per second converter to paste a column from Excel.
How to Convert BTU per Hour to Foot-pound per Second
- 1 BTU/h = 0.2161581284 ft·lbf/s
- 1 ft·lbf/s = 4.626242868 BTU/h
- Example: convert 15 BTU/h to ft·lbf/s: 15 BTU/h = 15 × 0.2161581284 ft·lbf/s = 3.242371926 ft·lbf/s
Formula
ft·lbf/s = BTU/h × 0.2161581284072
or ft·lbf/s = BTU/h ÷ 4.626242868444
Derivation from SI units:
- 1 BTU/h = 1055.05585262 J ÷ 3600 s = 0.29307107 W
- 1 ft·lbf/s = 1.3558179483314 W
- 1 BTU/h = 0.2930710701722 W ÷ 1.355817948331 W per ft·lbf/s = 0.2161581284072 ft·lbf/s
Both units are defined exactly, so the factor is exact. BTU per Hour definition: BTU per hour; Foot-pound per Second definition: foot-pound per second.
Worked examples
- A reading of 9000 BTU/h converts to 1945.423156 ft·lbf/s.
9000 BTU/h × 0.2161581284 = 1945.423156 ft·lbf/s - A value of 36000 BTU/h is 7781.692623 ft·lbf/s.
36000 BTU/h × 0.2161581284 = 7781.692623 ft·lbf/s
BTU per Hour to Foot-pound per Second conversion table
| BTU per Hour (BTU/h) | Foot-pounds per Second (ft·lbf/s) |
|---|---|
| 1000 BTU/h | 216.1581284 ft·lbf/s |
| 3412 BTU/h | 737.5315341 ft·lbf/s |
| 5000 BTU/h | 1080.790642 ft·lbf/s |
| 6000 BTU/h | 1296.94877 ft·lbf/s |
| 8000 BTU/h | 1729.265027 ft·lbf/s |
| 9000 BTU/h | 1945.423156 ft·lbf/s |
| 10000 BTU/h | 2161.581284 ft·lbf/s |
| 12000 BTU/h | 2593.897541 ft·lbf/s |
| 18000 BTU/h | 3890.846311 ft·lbf/s |
| 24000 BTU/h | 5187.795082 ft·lbf/s |
| 36000 BTU/h | 7781.692623 ft·lbf/s |
| 48000 BTU/h | 10375.59016 ft·lbf/s |
| 60000 BTU/h | 12969.4877 ft·lbf/s |
| 80000 BTU/h | 17292.65027 ft·lbf/s |
| 100000 BTU/h | 21615.81284 ft·lbf/s |
Where it's used
BTU per Hour are used for air-conditioner and heat-pump capacity (e.g. 12 000 BTU/h), while foot-pounds per second appear in mechanics problems in US units. Both measure power (energy per unit time), so the conversion is a fixed factor.
BTU per Hour to other power units
| Conversion | 1 BTU/h equals |
|---|---|
| BTU per hour to watt | 0.2930710702 W |
| BTU per hour to milliwatt | 293.0710702 mW |
| BTU per hour to kilowatt | 0.0002930710702 kW |
| BTU per hour to megawatt | 2.930710702 × 10⁻⁷ MW |
| BTU per hour to horsepower | 0.0003930147789 hp |
| BTU per hour to metric horsepower | 0.0003984657624 PS |
| BTU per hour to refrigeration ton | 0.00008333333333 TR |
| BTU per hour to kilocalorie per hour | 0.2519957611 kcal/h |
| BTU per hour to foot-pound per second | 0.2161581284 ft·lbf/s |
Frequently asked questions
How many foot-pounds per second are in 1 BTU per hour?
1 BTU/h = 0.2161581284 ft·lbf/s.
How do I convert BTU per hour to foot-pounds per second?
Multiply the value in BTU/h by 0.2161581284, or divide it by 4.626242868. For example, 15 BTU/h × 0.2161581284 = 3.242371926 ft·lbf/s.
Is the BTU/h to ft·lbf/s 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, "British thermal unit_IT per hour".
- 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 per second".
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 BTU per Hour to Foot-pounds per Second. Retrieved October 17, 2026, from https://scientificconverters.com/power/btu-per-hour-to-foot-pounds-per-second/
IEEE
Scientific Converters, "Convert BTU per Hour to Foot-pounds per Second," scientificconverters.com. Accessed: Oct. 17, 2026. [Online]. Available: https://scientificconverters.com/power/btu-per-hour-to-foot-pounds-per-second/