A system for measuring a shape, includes an external storage unit storing tolerances of first and second shape factors defining a design shape of a measuring object; a first measuring tool measuring the first shape factor of the measuring object to obtain measurement data; and a measurement processing unit determining a shape of the measuring object. The measurement processing unit includes; a comparison module comparing the measurement data of the first shape factor with the tolerance of the first shape factor; a verification module composing a predicted shape using the measurement data and verifying whether the predicted shape is formed as a figure; a calculation module calculating predicted data of the second shape factor from the predicted shape; and a determination module determining a measurement shape by comparing the predicted data with the tolerance of the second shape factor.