The dimensions of credit card are:
Width is 3.75 inches which is equal to 85.6mm whereas height is around 2.125 inches which is equally to 53.98 mm and the thickness is 0.03 inches which is equal to 0.76 mm
They are confirmed by ISO/IEC 7810 ID-1 standard and are usuaaly same the size of atm card and debit cards They also ensuring compatibility with card readers and other equipment worldwide. So now you got the answer for what are the dimensions of a credit card