Bank card size:

Generally speaking, the size of a bank card is 85.60 mm long and 53.98 mm wide. The overall aspect ratio is 4: 3.

Bank card refers to a credit payment tool issued by commercial banks (including postal financial institutions) to the society with all or part of the functions of consumer credit, transfer settlement, cash deposit and withdrawal, etc. Bank card reduces the circulation of cash and checks, which makes the banking business break through the limitation of time and space and undergo fundamental changes. The application of bank card automatic settlement system will make "a society without checks and cash" a reality.

Credit cards are divided into credit cards and quasi-credit cards. Credit card refers to the credit card that the issuing bank gives the cardholder a certain credit limit, and the cardholder can spend first and then repay. Quasi-credit card refers to a credit card in which the cardholder deposits a certain amount of reserve fund according to the requirements of the bank, and when the reserve fund is insufficient to pay, it can be overdrawn within the credit limit stipulated by the issuing bank.