Convert Kilocalories per Hour to Tons of Refrigeration
1 kilocalorie per hour (kcal/h) equals 0.0003306933933 tons of refrigeration (TR).
1 kcal/h = 0.0003306933933 TR
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk kilocalorie per hour to refrigeration ton converter to paste a column from Excel.
How to Convert Kilocalorie per Hour to Ton of Refrigeration
- 1 kcal/h = 0.0003306933933 TR
- 1 TR = 3023.949133 kcal/h
- Example: convert 15 kcal/h to TR: 15 kcal/h = 15 × 0.0003306933933 TR = 0.004960400899 TR
Reference conditions. kcal/h: Uses the International Table kilocalorie (4186.8 J), the convention in heating and HVAC: 1 kcal/h = 1.163 W.
Formula
TR = kcal/h × 0.0003306933932773
or TR = kcal/h ÷ 3023.949133333
Derivation from SI units:
- 1 kcal_IT/h = 4186.8 J ÷ 3600 s = 1.163 W (exact)
- 1 TR = 12 000 BTU/h = 3516.8528420667 W
- 1 kcal/h = 1.163 W ÷ 3516.852842067 W per TR = 0.0003306933932773 TR
Both units are defined exactly, so the factor is exact. Kilocalorie per Hour definition: kilocalorie per hour; Ton of Refrigeration definition: ton of refrigeration.
Worked examples
- A reading of 1000 kcal/h converts to 0.3306933933 TR.
1000 kcal/h × 0.0003306933933 = 0.3306933933 TR - A value of 10000 kcal/h is 3.306933933 TR.
10000 kcal/h × 0.0003306933933 = 3.306933933 TR
Kilocalorie per Hour to Ton of Refrigeration conversion table
| Kilocalories per Hour (kcal/h) | Tons of Refrigeration (TR) |
|---|---|
| 100 kcal/h | 0.03306933933 TR |
| 500 kcal/h | 0.1653466966 TR |
| 860 kcal/h | 0.2843963182 TR |
| 1000 kcal/h | 0.3306933933 TR |
| 2000 kcal/h | 0.6613867866 TR |
| 5000 kcal/h | 1.653466966 TR |
| 10000 kcal/h | 3.306933933 TR |
| 20000 kcal/h | 6.613867866 TR |
| 50000 kcal/h | 16.53466966 TR |
Where it's used
Kilocalories per Hour are used for radiator and boiler ratings in older European data, while tons of refrigeration appear in air-conditioner and chiller capacity in the US and Asia. Both measure power (energy per unit time), so the conversion is a fixed factor.
Kilocalorie per Hour to other power units
| Conversion | 1 kcal/h equals |
|---|---|
| kilocalorie per hour to watt | 1.163 W |
| kilocalorie per hour to milliwatt | 1163 mW |
| kilocalorie per hour to kilowatt | 0.001163 kW |
| kilocalorie per hour to megawatt | 0.000001163 MW |
| kilocalorie per hour to horsepower | 0.00155960869 hp |
| kilocalorie per hour to metric horsepower | 0.001581239941 PS |
| kilocalorie per hour to BTU per hour | 3.968320719 BTU/h |
| kilocalorie per hour to refrigeration ton | 0.0003306933933 TR |
| kilocalorie per hour to foot-pound per second | 0.8577847796 ft·lbf/s |
Frequently asked questions
How many tons of refrigeration are in 1 kilocalorie per hour?
1 kcal/h = 0.0003306933933 TR.
How do I convert kilocalories per hour to tons of refrigeration?
Multiply the value in kcal/h by 0.0003306933933, or divide it by 3023.949133. For example, 15 kcal/h × 0.0003306933933 = 0.004960400899 TR.
Is the kcal/h to TR 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, "calorie_IT" with 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, "ton of refrigeration (12 000 Btu_IT/h)".
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 Kilocalories per Hour to Tons of Refrigeration. Retrieved October 17, 2026, from https://scientificconverters.com/power/kilocalories-per-hour-to-tons-of-refrigeration/
IEEE
Scientific Converters, "Convert Kilocalories per Hour to Tons of Refrigeration," scientificconverters.com. Accessed: Oct. 17, 2026. [Online]. Available: https://scientificconverters.com/power/kilocalories-per-hour-to-tons-of-refrigeration/