Heat Transfer Coefficient Calculator

The heat transfer coefficient \(h\) quantifies convective heat transfer intensity. It combines fluid properties and flow conditions into one value for engineering calculations.

Thermal conductivity \(k\) describes conduction through a solid (W/(m·K)). The heat transfer coefficient \(h\) describes convection at a fluid-solid interface (W/(m²·K)). They apply to different mechanisms.

Heat flux \(q = Q/A = h \times \Delta T\) is the heat rate per unit area in W/m². It equals the product of \(h\) and the temperature difference.

Yes. Faster flow generally increases \(h\) because the boundary layer thins and mixing improves. Natural convection has lower \(h\) than forced convection at the same \(\Delta T\).

Yes. Rearrange to \(Q = h \times A \times \Delta T\). Select "Solve for heat rate" in the calculator to find \(Q\) from known \(h\), \(A\), and \(\Delta T\).