Convert Milliwatt per metre degree Celsius to Watt per metre kelvin
Convert Milliwatt per metre degree Celsius (mW/(m·°C)) to Watt per metre kelvin (W/(m·K)) instantly and accurately.
Conversion Formula
W/(m·K) = mW/(m·°C) × 0.001
About Milliwatt per metre degree Celsius
The milliwatt per metre degree Celsius (mW/(m·°C)) equals exactly 1 mW/(m·K) = 10⁻³ W/(m·K) since temperature intervals 1 °C = 1 K. Used interchangeably with mW/(m·K) in building physics, insulation standards (EN ISO 10456), and material datasheets where Celsius is the preferred temperature scale. Still air ≈26 mW/(m·°C); mineral wool ≈35 mW/(m·°C). 1 mW/(m·°C) = 1 mW/(m·K) = 10⁻³ 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
| Milliwatt per metre degree Celsius (mW/(m·°C)) | Watt per metre kelvin (W/(m·K)) |
|---|---|
| 1 mW/(m·°C) | 0.001 W/(m·K) |
| 2 mW/(m·°C) | 0.002 W/(m·K) |
| 5 mW/(m·°C) | 0.005 W/(m·K) |
| 10 mW/(m·°C) | 0.01 W/(m·K) |
| 25 mW/(m·°C) | 0.025 W/(m·K) |
| 50 mW/(m·°C) | 0.05 W/(m·K) |
| 100 mW/(m·°C) | 0.1 W/(m·K) |