A route guidance apparatus comprising: a route search unit which searches for at least one route, to a predetermined destination, which is to be traveled by an electric vehicle propelled by electric power stored in a battery provided within the vehicle; a power consumption calculation unit which calculates power consumption of the electric vehicle when a route to the destination, which was searched for by the route search unit, is traveled by the electric vehicle, based on information on electric power to be consumed when the electric vehicle travels and geographical information relating to the route; and a power consumption presenting unit on which a route, which was searched for by the route search unit, is presented together with power consumption calculated by the power consumption calculation unit; wherein the power consumption calculation unit calculates power consumption of the electric vehicle in traveling the route to the destination, which was searched for by the route search unit, with consideration of power consumption of a device provided on the electric vehicle; the power consumption calculation unit is configured to turn the device off, if the power consumption of the device is such that an electric power amount in the battery will become insufficient to reach the predetermined destination; the route guidance apparatus further comprises a recording unit which has gradient information for a road recorded therein; and a power information holding unit which holds information on power consumption of the electric vehicle per gradient and information on an acquisition amount of regenerative energy of the electric vehicle per gradient; and the power consumption calculation unit calculates power consumption using the gradient information recorded in the recording unit and the information held in the power information holding unit. a route search unit which searches for at least one route, to a predetermined destination, which is to be traveled by an electric vehicle propelled by electric power stored in a battery provided within the vehicle; a power consumption calculation unit which calculates power consumption of the electric vehicle when a route to the destination, which was searched for by the route search unit, is traveled by the electric vehicle, based on information on electric power to be consumed when the electric vehicle travels and geographical information relating to the route; and a power consumption presenting unit on which a route, which was searched for by the route search unit, is presented together with power consumption calculated by the power consumption calculation unit; wherein the power consumption calculation unit calculates power consumption of the electric vehicle in traveling the route to the destination, which was searched for by the route search unit, with consideration of power consumption of a device provided on the electric vehicle; the power consumption calculation unit is configured to turn the device off, if the power consumption of the device is such that an electric power amount in the battery will become insufficient to reach the predetermined destination; the route guidance apparatus further comprises a recording unit which has gradient information for a road recorded therein; and a power information holding unit which holds information on power consumption of the electric vehicle per gradient and information on an acquisition amount of regenerative energy of the electric vehicle per gradient; and a recording unit which has gradient information for a road recorded therein; and a power information holding unit which holds information on power consumption of the electric vehicle per gradient and information on an acquisition amount of regenerative energy of the electric vehicle per gradient; and the power consumption calculation unit calculates power consumption using the gradient information recorded in the recording unit and the information held in the power information holding unit.