Convert Kilocalories per Hour to Metric Horsepower
1 kilocalorie per hour (kcal/h) equals 0.001581239941 metric horsepower (PS).
1 kcal/h = 0.001581239941 PS
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk kilocalorie per hour to metric horsepower converter to paste a column from Excel.
How to Convert Kilocalorie per Hour to Metric Horsepower
- 1 kcal/h = 0.001581239941 PS
- 1 PS = 632.4150903 kcal/h
- Example: convert 15 kcal/h to PS: 15 kcal/h = 15 × 0.001581239941 PS = 0.02371859911 PS
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
PS = kcal/h × 0.001581239940924
or PS = kcal/h ÷ 632.4150902837
Derivation from SI units:
- 1 kcal_IT/h = 4186.8 J ÷ 3600 s = 1.163 W (exact)
- 1 PS = 75 kgf·m/s = 735.49875 W (exact)
- 1 kcal/h = 1.163 W ÷ 735.49875 W per PS = 0.001581239940924 PS
Both units are defined exactly, so the factor is exact. Kilocalorie per Hour definition: kilocalorie per hour; Metric Horsepower definition: metric horsepower.
Worked examples
- A reading of 1000 kcal/h converts to 1.581239941 PS.
1000 kcal/h × 0.001581239941 = 1.581239941 PS - A value of 10000 kcal/h is 15.81239941 PS.
10000 kcal/h × 0.001581239941 = 15.81239941 PS
Kilocalorie per Hour to Metric Horsepower conversion table
| Kilocalories per Hour (kcal/h) | Metric Horsepower (PS) |
|---|---|
| 100 kcal/h | 0.1581239941 PS |
| 500 kcal/h | 0.7906199705 PS |
| 860 kcal/h | 1.359866349 PS |
| 1000 kcal/h | 1.581239941 PS |
| 2000 kcal/h | 3.162479882 PS |
| 5000 kcal/h | 7.906199705 PS |
| 10000 kcal/h | 15.81239941 PS |
| 20000 kcal/h | 31.62479882 PS |
| 50000 kcal/h | 79.06199705 PS |
Where it's used
Kilocalories per Hour are used for radiator and boiler ratings in older European data, while metric horsepower appear in european and Japanese car specifications (PS, CV). 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 metric horsepower are in 1 kilocalorie per hour?
1 kcal/h = 0.001581239941 PS.
How do I convert kilocalories per hour to metric horsepower?
Multiply the value in kcal/h by 0.001581239941, or divide it by 632.4150903. For example, 15 kcal/h × 0.001581239941 = 0.02371859911 PS.
Is the kcal/h to PS 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, "horsepower (metric)".
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 Metric Horsepower. Retrieved October 17, 2026, from https://scientificconverters.com/power/kilocalories-per-hour-to-metric-horsepower/
IEEE
Scientific Converters, "Convert Kilocalories per Hour to Metric Horsepower," scientificconverters.com. Accessed: Oct. 17, 2026. [Online]. Available: https://scientificconverters.com/power/kilocalories-per-hour-to-metric-horsepower/