PROBLEM TO BE SOLVED: To provide a communication type grip dynamometer and a leg muscular strength estimation device capable of overcoming the inconvenience of grip value data storage in the conventional grip measuring apparatus and calculating leg muscular strength data and falling age data of a person to be measured.SOLUTION: In this invention, grip measurement means 12, communication means 16 for externally transmitting grip value data outputted by the grip measurement means 12, a reader-writer 56 for receiving the grip value data transmitted from the communication means 16 in a noncontact manner, and information processing means 50 for inputting the grip value data through the reader-writer 56 are included. The information processing means 50 includes a leg muscular strength calculation device 531, falling age calculation means 532, and personal data input means for inputting personal data.