Convert Tons of Refrigeration to Horsepower
1 ton of refrigeration (TR) equals 4.716177347 horsepower (hp).
1 TR = 4.716177347 hp
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk refrigeration ton to horsepower converter to paste a column from Excel.
How to Convert Ton of Refrigeration to Horsepower
- 1 TR = 4.716177347 hp
- 1 hp = 0.2120361315 TR
- Example: convert 15 TR to hp: 15 TR = 15 × 4.716177347 hp = 70.74266021 hp
Reference conditions. hp: Mechanical (imperial) horsepower, 550 ft·lbf/s. Metric horsepower (PS) is about 1.4 % smaller.
Formula
hp = TR × 4.716177347066
Derivation from SI units:
- 1 TR = 12 000 BTU/h = 3516.8528420667 W
- 1 hp = 550 ft·lbf/s = 745.69987158227 W
- 1 TR = 3516.852842067 W ÷ 745.6998715823 W per hp = 4.716177347066 hp
Both units are defined exactly, so the factor is exact. Ton of Refrigeration definition: ton of refrigeration; Horsepower definition: horsepower.
Worked examples
- A reading of 2.5 TR converts to 11.79044337 hp.
2.5 TR × 4.716177347 = 11.79044337 hp - A value of 10 TR is 47.16177347 hp.
10 TR × 4.716177347 = 47.16177347 hp
Ton of Refrigeration to Horsepower conversion table
| Tons of Refrigeration (TR) | Horsepower (hp) |
|---|---|
| 0.5 TR | 2.358088674 hp |
| 0.75 TR | 3.53713301 hp |
| 1 TR | 4.716177347 hp |
| 1.5 TR | 7.074266021 hp |
| 2 TR | 9.432354694 hp |
| 2.5 TR | 11.79044337 hp |
| 3 TR | 14.14853204 hp |
| 3.5 TR | 16.50662071 hp |
| 4 TR | 18.86470939 hp |
| 5 TR | 23.58088674 hp |
| 7.5 TR | 35.3713301 hp |
| 10 TR | 47.16177347 hp |
| 20 TR | 94.32354694 hp |
| 50 TR | 235.8088674 hp |
| 100 TR | 471.6177347 hp |
| 500 TR | 2358.088674 hp |
| 1000 TR | 4716.177347 hp |
Where it's used
Tons of Refrigeration are used for air-conditioner and chiller capacity in the US and Asia, 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.
Ton of Refrigeration to other power units
| Conversion | 1 TR equals |
|---|---|
| refrigeration ton to watt | 3516.852842 W |
| refrigeration ton to milliwatt | 3516852.842 mW |
| refrigeration ton to kilowatt | 3.516852842 kW |
| refrigeration ton to megawatt | 0.003516852842 MW |
| refrigeration ton to horsepower | 4.716177347 hp |
| refrigeration ton to metric horsepower | 4.781589149 PS |
| refrigeration ton to BTU per hour | 12000 BTU/h |
| refrigeration ton to kilocalorie per hour | 3023.949133 kcal/h |
| refrigeration ton to foot-pound per second | 2593.897541 ft·lbf/s |
Frequently asked questions
How many horsepower are in 1 ton of refrigeration?
1 TR = 4.716177347 hp.
How do I convert tons of refrigeration to horsepower?
Multiply the value in TR by 4.716177347. For example, 15 TR × 4.716177347 = 70.74266021 hp.
Is the TR 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, "ton of refrigeration (12 000 Btu_IT/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, "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 Tons of Refrigeration to Horsepower. Retrieved October 17, 2026, from https://scientificconverters.com/power/tons-of-refrigeration-to-horsepower/
IEEE
Scientific Converters, "Convert Tons of Refrigeration to Horsepower," scientificconverters.com. Accessed: Oct. 17, 2026. [Online]. Available: https://scientificconverters.com/power/tons-of-refrigeration-to-horsepower/