Online Thermodynamics Heat Transfer Calculator Online Thermodynamics Heat Transfer Calculator Calculate heat transfer through conduction, convection, and radiation. Conduction Convection Radiation Conduction Heat Transfer (Fourier's Law) Thermal Conductivity (k) [W/m·K] Area (A) [m²] Temperature 1 (T₁) [°C] Temperature 2 (T₂) [°C] Thickness (Δx) [m] Convection Heat Transfer (Newton's Law of Cooling) Convection Coefficient (h) [W/m²·K] Surface Area (A) [m²] Surface Temperature (Tₛ) [°C] Fluid Temperature (Tᵪ) [°C] Radiation Heat Transfer (Stefan-Boltzmann Law) Emissivity (ε) [0-1] Surface Area (A) [m²] Surface Temperature (T) [°C] Calculate Heat Transfer Download Report as PDF Calculation Result