The physical size of standard playing cards typically conforms to one of two common measurements. Bridge-sized cards are usually around 2.25 inches wide by 3.5 inches tall. Poker-sized cards, slightly wider, generally measure approximately 2.5 inches in width and 3.5 inches in height. These measurements are fundamental to the handling and shuffling of the deck during gameplay.
Consistent card sizing enhances fairness and ease of use in various card games. Standardized dimensions also facilitate the manufacturing process and compatibility with card accessories like shufflers and dealing shoes. Historically, the adoption of standard sizes has aided in the widespread popularity and accessibility of card games across different cultures and settings.