Convert Thermochemical calorie per centimetre per second per degree Celsius to Watt per millimetre kelvin
Convert Thermochemical calorie per centimetre per second per degree Celsius (cal(th)/(cm·s·°C)) to Watt per millimetre kelvin (W/(mm·K)) instantly and accurately.
Conversion Formula
W/(mm·K) = cal(th)/(cm·s·°C) × 0.4184
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 millimetre kelvin
The watt per millimetre kelvin (W/(mm·K)) equals exactly 1000 W/(m·K) since 1 mm = 10⁻³ m. Used in microelectronics thermal engineering where components are millimetre-scale: copper ≈0.385, silicon ≈0.148 W/(mm·K). Thermal interface material datasheets for high-performance pads and solder joints commonly use this unit. 1 W/(mm·K) = 1000 W/(m·K) = 10 W/(cm·K).
Quick Reference Table
| Thermochemical calorie per centimetre per second per degree Celsius (cal(th)/(cm·s·°C)) | Watt per millimetre kelvin (W/(mm·K)) |
|---|---|
| 1 cal(th)/(cm·s·°C) | 0.4184 W/(mm·K) |
| 2 cal(th)/(cm·s·°C) | 0.8368 W/(mm·K) |
| 5 cal(th)/(cm·s·°C) | 2.092 W/(mm·K) |
| 10 cal(th)/(cm·s·°C) | 4.184 W/(mm·K) |
| 25 cal(th)/(cm·s·°C) | 10.46 W/(mm·K) |
| 50 cal(th)/(cm·s·°C) | 20.92 W/(mm·K) |
| 100 cal(th)/(cm·s·°C) | 41.84 W/(mm·K) |