Internal components of magnetic confinement fusion machines are subjected to significant heat fluxes. A large part of this power is directed towards plasma facing components. Even if theses components are especially designed to receive about 10MW/m2, surface temperature and heat flux measurements are important issues to guarantee safe plasma operation. In the JET tokamak, few embedded thermocouples (TC) located 1cm below the tile surface are used to measure the bulk temperatures of the Carbon Fiber tiles (coated with about 20µm of tungsten with the ITER-like wall). We propose here to use an inverse thermal calculation based on Thermal Quadrupole method to locally deduce the deposited heat flux. The calculation requires the location of the peak and the normalized 1D-shape of the heat flux deposited on the target.