Convert Kilocalories per Hour to Calories per Second
Convert Kilocalories per Hour (kcal/h) to Calories per Second (cal/s) instantly and accurately.
Conversion Formula
cal/s = kcal/h × 0.2777777778
About Kilocalories per Hour
One kilocalorie per hour (kcal/h) equals exactly 1.163 W. It is the natural unit for human metabolic rate: sedentary adult ~60-70 kcal/h; walking 250-350 kcal/h; vigorous cycling 500-700 kcal/h; competitive rowing ~1,200 kcal/h. Treadmills and exercise bikes display kcal/h directly. Industrial drying and evaporation calcs in older metric systems (especially Asia) used kcal/h for heat duty; 1 Mcal/h = 1.163 kW. 1 kcal/h = 1.163 W.
About Calories per Second
One calorie per second (cal/s) = exactly 4.1868 W. It bridges thermochemistry and power: bomb calorimeters and reaction calorimeters characterise exothermic events by cal/s during the reaction interval. Food science uses cal/s to model heat transfer into food during frying or roasting. Since 1 kcal/s = 4,186.8 W, kilocalories per second appear in high-intensity industrial dryers and continuous-flow reactor heat duties. 1 cal/s = 4.1868 W.
Quick Reference Table
| Kilocalories per Hour (kcal/h) | Calories per Second (cal/s) |
|---|---|
| 1 kcal/h | 0.277778 cal/s |
| 2 kcal/h | 0.555556 cal/s |
| 5 kcal/h | 1.38889 cal/s |
| 10 kcal/h | 2.77778 cal/s |
| 25 kcal/h | 6.94444 cal/s |
| 50 kcal/h | 13.8889 cal/s |
| 100 kcal/h | 27.7778 cal/s |