Disclosed are a receiver and signal received power estimation method which achieve an accurate signal received power estimate. A receiver (10) which receives information sent in parallel using multiple subcarriers has a channel estimation unit (13) which calculates an estimated channel value for each of the subcarriers, and a signal received power estimation unit (16) which estimates the signal received power of information on the basis of the channel estimation value calculated by the channel estimation unit (13). The signal received power estimation unit (16), in the case of a narrow bandwidth wherein the number of subcarriers used in the parallel transmission is less than a prescribed value, processes the channel estimated value estimated by the channel estimation unit (13) by performing in-phase addition in the time direction, averaging in the frequency direction, and conjugate multiplication, in that order, and, in the case of a broad bandwidth wherein the number of subcarriers used in the parallel transmission is greater than or equal to the prescribed value, processes the channel estimated value estimated by the channel estimation unit (13) by performing averaging in the frequency direction, conjugate multiplication, and in-phase addition in the time direction, in that order.