Thermal Conductivity Calculator
Calculate the thermal conductivity of materials
Thermal Conductivity Result
How to Use
Enter the required values:
- Heat Flow Rate (Q): Amount of heat energy transferred per unit time (Watts)
- Cross-sectional Area (A): Area through which heat flows (m²)
- Temperature Difference (ΔT): Temperature difference across material (Kelvin)
- Thickness (d): Material thickness in direction of heat flow (meters)
Example
For a material with Q=500W, A=0.5m², ΔT=20K, d=0.1m:
k = (500 × 0.1) / (0.5 × 20) = 50 / 10 = 5 W/m·K
Thermal conductivity is a material property that indicates its ability to conduct heat. Materials with high thermal conductivity (like metals) are good heat conductors, while materials with low thermal conductivity (like wood or foam) are good insulators.
Use Watts (W) for heat flow, square meters (m²) for area, Kelvin (K) for temperature difference, and meters (m) for thickness. The result will be in W/m·K.
Copper: ~400 W/m·K, Aluminum: ~200 W/m·K, Brick: ~0.7 W/m·K, Wood: ~0.1 W/m·K, Insulation: ~0.04 W/m·K.
Yes, for temperature differences, 1°C = 1K, so you can use the same numerical value for ΔT whether using Celsius or Kelvin.