A dietary measurement system and a method of correlating dietary information to a defined volume of a measuring device are provided to reduce the effort and time necessary to keep track of the nutritional intake. The dietary measurement system comprises at least a measuring device adapted to accommodate food having multiple measurement indicators representing defined volumes, a nutrition database comprising dietary contents information for food and a mapping device. The mapping device comprises an input interface for receiving food selection information and a mapping processor, connected with said input interface and said nutrition database, said mapping processor being adapted to generate dietary correlation data from said dietary contents information, said dietary correlation data providing a reference between one of said measurement indicators of said measuring device and a given dietary contents level for food according to said food selection information.