Convert Kilocalories per Hour to BTU per Hour
Convert Kilocalories per Hour (kcal/h) to BTU per Hour (BTU/h) instantly and accurately.
Conversion Formula
BTU/h = kcal/h × 3.968320719
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 BTU per Hour
One BTU per hour (BTU/h) ≈ 0.2931 W - the dominant HVAC capacity unit in the US and Canada. Room air conditioners are universally rated in BTU/h: 12,000 BTU/h = 1 ton of refrigeration = 3,517 W. Home furnaces range from 40,000-150,000 BTU/h. Office building cooling demand is calculated in BTU/h per ft². Engineers convert: BTU/h × 0.2931 = W; or W × 3.412 = BTU/h. 1 BTU/h = 0.29307 W.
Quick Reference Table
| Kilocalories per Hour (kcal/h) | BTU per Hour (BTU/h) |
|---|---|
| 1 kcal/h | 3.96832 BTU/h |
| 2 kcal/h | 7.93664 BTU/h |
| 5 kcal/h | 19.8416 BTU/h |
| 10 kcal/h | 39.6832 BTU/h |
| 25 kcal/h | 99.208 BTU/h |
| 50 kcal/h | 198.416 BTU/h |
| 100 kcal/h | 396.832 BTU/h |