Are Yu-Gi-Oh and Pokemon Cards the same size?

No, Yu-Gi-Oh! and Pokémon cards are not the same size.

* Yu-Gi-Oh! cards are slightly larger than Pokémon cards.

* Pokémon cards are standard size, measuring 2.5 inches by 3.5 inches.

* Yu-Gi-Oh! cards measure 2.75 inches by 3.875 inches.

This difference in size means you can't use standard card sleeves designed for Pokémon cards on Yu-Gi-Oh! cards, and vice versa.