Learn more about standard credit card size and why it matters. Featured Partner Offers. 1. American Express Cobalt® Card. Apply Now . On American Express’s Secure Website. Welcome Bonus.

Credit card size in inches: 3.375 inches wide by 2.125 inches wide. ... Standard credit card sizes make it easier for payment-related technology to accept credit cards.

If the cards were 4 inches wide and 3.5 inches tall, folding them in half would make them 2 inches wide and 3.5 inches tall. That’s pretty close to the size of a standard credit card.

There is a lot of rich history behind the business (or visiting) card. The credit card was just the business card juxtaposed to the size of the standard business card, for ease of use in the ...