13 cm =5.11811024 inches
5cm = 1.96850394 inches
15.5 = 6.1023622 inches

11cm= 4.33070866 inches
7cm= 2.75590551 inches
14cm= 5.51181102 inches

There, easy! Just plug into Google XXcm to inches, and there is your answer!

Works with XXGBP to US dollars too! Try it!

K