Convert BTU per Hour to Horsepower
1 BTU per hour (BTU/h) equals 0.0003930147789 horsepower (hp).
1 BTU/h = 0.0003930147789 hp
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk BTU per hour to horsepower converter to paste a column from Excel.
How to Convert BTU per Hour to Horsepower
- 1 BTU/h = 0.0003930147789 hp
- 1 hp = 2544.433578 BTU/h
- Example: convert 15 BTU/h to hp: 15 BTU/h = 15 × 0.0003930147789 hp = 0.005895221684 hp
Reference conditions. hp: Mechanical (imperial) horsepower, 550 ft·lbf/s. Metric horsepower (PS) is about 1.4 % smaller.
Formula
hp = BTU/h × 0.0003930147789222
or hp = BTU/h ÷ 2544.433577644
Derivation from SI units:
- 1 BTU/h = 1055.05585262 J ÷ 3600 s = 0.29307107 W
- 1 hp = 550 ft·lbf/s = 745.69987158227 W
- 1 BTU/h = 0.2930710701722 W ÷ 745.6998715823 W per hp = 0.0003930147789222 hp
Both units are defined exactly, so the factor is exact. BTU per Hour definition: BTU per hour; Horsepower definition: horsepower.
Worked examples
- A reading of 9000 BTU/h converts to 3.53713301 hp.
9000 BTU/h × 0.0003930147789 = 3.53713301 hp - A value of 36000 BTU/h is 14.14853204 hp.
36000 BTU/h × 0.0003930147789 = 14.14853204 hp
BTU per Hour to Horsepower conversion table
| BTU per Hour (BTU/h) | Horsepower (hp) |
|---|---|
| 1000 BTU/h | 0.3930147789 hp |
| 3412 BTU/h | 1.340966426 hp |
| 5000 BTU/h | 1.965073895 hp |
| 6000 BTU/h | 2.358088674 hp |
| 8000 BTU/h | 3.144118231 hp |
| 9000 BTU/h | 3.53713301 hp |
| 10000 BTU/h | 3.930147789 hp |
| 12000 BTU/h | 4.716177347 hp |
| 18000 BTU/h | 7.074266021 hp |
| 24000 BTU/h | 9.432354694 hp |
| 36000 BTU/h | 14.14853204 hp |
| 48000 BTU/h | 18.86470939 hp |
| 60000 BTU/h | 23.58088674 hp |
| 80000 BTU/h | 31.44118231 hp |
| 100000 BTU/h | 39.30147789 hp |
Where it's used
BTU per Hour are used for air-conditioner and heat-pump capacity (e.g. 12 000 BTU/h), while horsepower appear in car and motorcycle engine power in the US and UK. 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 horsepower are in 1 BTU per hour?
1 BTU/h = 0.0003930147789 hp.
How do I convert BTU per hour to horsepower?
Multiply the value in BTU/h by 0.0003930147789, or divide it by 2544.433578. For example, 15 BTU/h × 0.0003930147789 = 0.005895221684 hp.
Is the BTU/h to hp 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, "horsepower (550 ft·lbf/s)".
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 Horsepower. Retrieved October 17, 2026, from https://scientificconverters.com/power/btu-per-hour-to-horsepower/
IEEE
Scientific Converters, "Convert BTU per Hour to Horsepower," scientificconverters.com. Accessed: Oct. 17, 2026. [Online]. Available: https://scientificconverters.com/power/btu-per-hour-to-horsepower/