Convert Thermochemical calorie per centimetre per second per degree Celsius to Watt per metre kelvin
Convert Thermochemical calorie per centimetre per second per degree Celsius (cal(th)/(cm·s·°C)) to Watt per metre kelvin (W/(m·K)) instantly and accurately.
Conversion Formula
W/(m·K) = cal(th)/(cm·s·°C) × 418.4
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 Watt per metre kelvin
The watt per metre kelvin (W/(m·K)) is the SI unit for thermal conductivity defined by Fourier's law q = -λ∇T. Materials span orders of magnitude: aerogels ≈0.015, glass ≈1.0, stainless steel ≈16, aluminium ≈205, copper ≈385, diamond ≈2200 W/(m·K). Referenced in ISO 22007, EN 12667, and all major international standards. 1 W/(m·K) = 1 W/(m·°C).
Quick Reference Table
| Thermochemical calorie per centimetre per second per degree Celsius (cal(th)/(cm·s·°C)) | Watt per metre kelvin (W/(m·K)) |
|---|---|
| 1 cal(th)/(cm·s·°C) | 418.4 W/(m·K) |
| 2 cal(th)/(cm·s·°C) | 836.8 W/(m·K) |
| 5 cal(th)/(cm·s·°C) | 2092 W/(m·K) |
| 10 cal(th)/(cm·s·°C) | 4184 W/(m·K) |
| 25 cal(th)/(cm·s·°C) | 10460 W/(m·K) |
| 50 cal(th)/(cm·s·°C) | 20920 W/(m·K) |
| 100 cal(th)/(cm·s·°C) | 41840 W/(m·K) |