Convective Heat Transfer Calculator

Calculate convection between a surface and fluid using Newton’s law of cooling. Solve for heat transfer rate, coefficient, area or temperature.

1. Choose what to calculate

What do you want to calculate?

Heat transfer rate (Q) Convection coefficient (h) Surface area (A) Surface temperature (Tꜱ) Fluid temperature (Tƒ)

Material and geometry

Convection coefficient (h)

Use a convection coefficient appropriate to the fluid and flow conditions.

Surface area (A)

Temperatures

Input units: °C / K / °F. Each input uses its selected unit; changing units converts values automatically.

Surface temperature (Tꜱ)

Fluid temperature (Tƒ)

Heat transfer

Q is a heat-transfer magnitude. When solving a temperature, this model assumes the surface is at least as warm as the fluid.

Resets fields and units to their defaults. Saved calculations remain.