For the validation of the software that performs the calculation of temperature profiles in cooling fins (ProfileFins) a rectangular fin heat sink was used, which was supplied with heat in order to be able to correctly measure the temperature variation in different air flow conditions and thus be able to realize our frontier conditions to obtain the temperature profile in a theoretical way and also to have the parameters to use in the software to be validated.Thus, the software presents a very acceptable margin of error concerning the theoretical calculation.