Britannica
Sources used in this answer
Why do playing cards have rounded corners?
Created from Britannica articles
using AI.
AI can make mistakes, so verify using Britannica articles.
playing cards
Euchre hand with the five highest cards if spades are trump.
Playing cards are typically designed with rounded corners to prevent the edges from fraying during use.1
Because playing cards are handled frequently and often fanned out in the hand, sharp corners would be prone to bending, splitting, or wearing down over time. By rounding the corners, manufacturers ensure the cards remain durable and maintain their uniform shape throughout repeated recreation and gameplay.1