A travelable distance calculation system for a target vehicle , the travelable distance calculation system comprising: a first storage device configured to store an energy consumption history of the target vehicle as first data (D1), the energy consumption history including one of a fuel consumption history and an electricity consumption history; a second storage device configured to store the energy consumption history of a plurality of vehicles other than the target vehicle as second data (D2); and an arithmetic unit configured to calculate a travelable distance of the target vehicle by using at least one of the first data (D1) and the second data (D2), the arithmetic unit configured to set a usage ratio between the first data (D1) and the second data (D2) according to a determination by a user of the target vehicle , and to calculate the travelable distance of the target vehicle using the set usage ratio; wherein: the travelable distance calculation system comprises a display device configured to display an image that allows the user to select a traveling condition, the second storage device is configured to store the second data (D2) for each traveling condition of the plurality of vehicles , the display device is configured to display a distribution of the second data (D2) corresponding to the traveling condition selected by the user, the arithmetic unit is configured to calculate the travelable distance of the target vehicle using second data (D2) corresponding to the traveling condition selected by the user, and the display device is configured to display the calculated travelable distance. a first storage device configured to store an energy consumption history of the target vehicle as first data (D1), the energy consumption history including one of a fuel consumption history and an electricity consumption history; a second storage device configured to store the energy consumption history of a plurality of vehicles other than the target vehicle as second data (D2); and an arithmetic unit configured to calculate a travelable distance of the target vehicle by using at least one of the first data (D1) and the second data (D2), the arithmetic unit configured to set a usage ratio between the first data (D1) and the second data (D2) according to a determination by a user of the target vehicle , and to calculate the travelable distance of the target vehicle using the set usage ratio; wherein: the travelable distance calculation system comprises a display device configured to display an image that allows the user to select a traveling condition, the second storage device is configured to store the second data (D2) for each traveling condition of the plurality of vehicles , the display device is configured to display a distribution of the second data (D2) corresponding to the traveling condition selected by the user, the arithmetic unit is configured to calculate the travelable distance of the target vehicle using second data (D2) corresponding to the traveling condition selected by the user, and the display device is configured to display the calculated travelable distance. the travelable distance calculation system comprises a display device configured to display an image that allows the user to select a traveling condition, the second storage device is configured to store the second data (D2) for each traveling condition of the plurality of vehicles , the display device is configured to display a distribution of the second data (D2) corresponding to the traveling condition selected by the user, the arithmetic unit is configured to calculate the travelable distance of the target vehicle using second data (D2) corresponding to the traveling condition selected by the user, and the display device is configured to display the calculated travelable distance. <EOS>