Convert Calories per Hour to BTU per Minute
Convert Calories per Hour (cal/h) to BTU per Minute (BTU/min) instantly and accurately.
Conversion Formula
BTU/min = cal/h × 6.613867866e-5
About Calories per Hour
One calorie per hour (cal/h) equals exactly 0.001163 W - the rate of transferring one thermochemical calorie (4.1868 J) per hour. A resting adult generates ~70-80 W ≈ 60,000-70,000 cal/h of heat. The unit appears in European and Asian HVAC standards for small-appliance heat loads and in laboratory calorimetry reporting metabolic activity of small organisms. Calorimetric enzyme assays also express catalytic heat in cal/h per unit enzyme. 1 cal/h = 0.001163 W.
About BTU per Minute
One BTU per minute (BTU/min) ≈ 17.58 W. Fire engineering uses BTU/min for heat release rate (HRR): a burning sofa releases 500-5,000 BTU/min; a flashover room fire 50,000-500,000 BTU/min. US commercial gas burners are rated 500-2,000 BTU/min. NFPA fire suppression standards use BTU/min to match sprinkler flow to HRR. Industrial furnace heating cycles also use this unit. 1 BTU/min = 17.584 W.
Quick Reference Table
| Calories per Hour (cal/h) | BTU per Minute (BTU/min) |
|---|---|
| 1 cal/h | 6.614 × 10-5 BTU/min |
| 2 cal/h | 0.000132277 BTU/min |
| 5 cal/h | 0.000330693 BTU/min |
| 10 cal/h | 0.000661387 BTU/min |
| 25 cal/h | 0.00165347 BTU/min |
| 50 cal/h | 0.00330693 BTU/min |
| 100 cal/h | 0.00661387 BTU/min |