In this paper the calculated ECRH power deposition profiles pECRH(ρ) are compared with the experimentally derived ones in ASDEX Upgrade. ECRH power deposition is calculated by the beamtracing code and with its help the pECRH(ρ) behaviour at different ECRH scenarios is investigated. Experimentally, power deposition can be obtained from electron temperature differences dTe after switching on/off ECRH or from the perturbed electron temperature e when modulated ECRH is applied. The complete experimental recovery of the pECRH(ρ) requires the determination of its maximum, centre ρ0 and width w0. The centre of the deposition ρ0 is determined experimentally from the temperature response, from dTe after switching on/off ECRH or alternatively from e in modulated ECRH experiments. The measured width is broadened quickly by perpendicular heat transport, which makes the experimental determination of w0 very difficult. A scheme in which off-axis cw ECRH is applied in order to reduce the transport in the core plasma, where the modulated ECRH is deposited, is used in the determination of w0. We estimate the ECRH deposition width w0 in an indirect way, in which e(ρ) profiles determined experimentally from FFT are compared to those calculated with the transport code ASTRA. Finally, the total absorbed ECRH power is obtained experimentally by using a self-consistent power balance scheme.