playing cards size in cm

The simple answer is that the dimensions of the common playing card is approximately B8 size, 62mm wide by 88mm length (2. credit cards low apr 45 inches by 3. fast approval credit cards 5 inches) The not so simple answer is that for Bridge, playing cards are 2 25 inches by 3 5 inches, and for Poker, playing cards are 2 5 inches by 3 5 inches Therefore, B8 is a good common ground