Kilocalorie Per Hour (kcal/h)

ScientificTraditional unit (still used in some regions)

About 1.162 watts, using the thermochemical kilocalorie (the International Table kilocalorie gives 1.163 W).

1 kilocalorie per hour = 1.162222222 watts (approximately).

1 kilocalorie per hour = 1.162222222 watts

About the kilocalorie per hour

Heat output and body metabolism were long reckoned in kilocalories, so dividing by hours gave a convenient power unit for stoves, radiators and people. The kilocalorie descends from the calorie that Nicolas Clement introduced in lectures between 1819 and 1824, and the capitalized Calorie for the large unit was proposed by Marcellin Berthelot in 1879 and adopted for nutrition by Wilbur Atwater in 1887.

Which calorie is meant changes the answer. With the thermochemical kilocalorie of 4,184 joules the unit is 4,184 divided by 3,600, about 1.1622 watts, which is the figure used here. With the International Table kilocalorie of 4,186.8 joules it is exactly 1.163 watts, the same number that appears in the definition of the IT calorie as 1.163 milliwatt-hours. Either way, 60 kilocalories per hour is roughly 70 watts.

Sources: Wikipedia: Calorie; NIST SP 811, Appendix B.8

Kilocalorie Per Hour conversion chart

1 kilocalorie per hour expressed in every other power unit:

Unit1 kilocalorie per hour
Watts1.162222222
Kilowatts0.001162222222
Horsepower0.001558565673
Megawatts0.000001162222222
Gigawatts1.162222222×10⁻⁹
Metric Horsepower0.001580182457
BTU Per Hour3.965666831
Milliwatts1,162.222222
Electrical Horsepower0.001557938636
Foot-pounds Per Second0.8572111202
Tons Of Refrigeration0.0003304722359
Calories Per Second0.2777777778
Ergs Per Second11,622,222.22
Poncelets0.001185136843

More Scientific units

All Scientific units

Browse all power units.