Convert Thermochemical calorie per centimetre per second per degree Celsius to BTU per hour per foot per degree Fahrenheit
Convert Thermochemical calorie per centimetre per second per degree Celsius (cal(th)/(cm·s·°C)) to BTU per hour per foot per degree Fahrenheit (BTU/(h·ft·°F)) instantly and accurately.
Conversion Formula
BTU/(h·ft·°F) = cal(th)/(cm·s·°C) × 241.74705
About Thermochemical calorie per centimetre per second per degree Celsius
The cal(th)/(cm·s·°C) equals exactly 4.184/0.01 = 418.4 W/(m·K) (1 thermochemical calorie = 4.184 J). The CGS thermal conductivity unit dominant in US physics and chemistry before SI adoption. Copper: ≈0.921; aluminium: ≈0.489 cal(th)/(cm·s·°C). Not equal to cal(IT)/(cm·s·°C). 1 cal(th)/(cm·s·°C) = 418.4 W/(m·K).
About BTU per hour per foot per degree Fahrenheit
The BTU/(h·ft·°F) equals (1055.05585262 × 9)/(3600 × 0.3048 × 5) W/(m·K) ≈1.7307 W/(m·K). Standard US thermal conductivity unit in ASHRAE Handbook and ASTM C1045. Copper: ≈223; carbon steel: ≈26; brick: ≈0.44; glass fibre insulation: ≈0.025 BTU/(h·ft·°F). 1 BTU/(h·ft·°F) = 12 BTU·in/(h·ft²·°F) ≈1.7307 W/(m·K).
Quick Reference Table
| Thermochemical calorie per centimetre per second per degree Celsius (cal(th)/(cm·s·°C)) | BTU per hour per foot per degree Fahrenheit (BTU/(h·ft·°F)) |
|---|---|
| 1 cal(th)/(cm·s·°C) | 241.747 BTU/(h·ft·°F) |
| 2 cal(th)/(cm·s·°C) | 483.494 BTU/(h·ft·°F) |
| 5 cal(th)/(cm·s·°C) | 1208.74 BTU/(h·ft·°F) |
| 10 cal(th)/(cm·s·°C) | 2417.47 BTU/(h·ft·°F) |
| 25 cal(th)/(cm·s·°C) | 6043.68 BTU/(h·ft·°F) |
| 50 cal(th)/(cm·s·°C) | 12087.4 BTU/(h·ft·°F) |
| 100 cal(th)/(cm·s·°C) | 24174.7 BTU/(h·ft·°F) |