Quick and simple heat sink design

This site provides a web based tool for the design and analysis of plate fin heat sinks.The tool calculates the power source temperature, pressure drop and thermal resistance.

Forced Convection

Specify forced convection with an approach flow velocity or a volumetric flow rate

Natural Convection

Calculates the power source temperature and parameters for natural convection with the heat sink in the vertical or horizontal orientation


The ability to include or exclude the effects of radiation and adjust the surface emissivity

Material Properties

The option to select from a list of predefined materials or input custom material properties