A standard Pokémon card is 2.5 inches wide and 3.5 inches tall. In metric that is usually written as 63 by 88 mm, which is the size sleeve makers and Japanese card shops list. If you convert the inches exactly you get 63.5 by 88.9 mm, so both numbers you see online are describing the same card. The shape is a 5 to 7 ratio with rounded corners, and Japanese Pokémon cards use the same size as English ones.
That one measurement decides which sleeves, toploaders, binder pages and storage boxes you buy, so it is worth getting the details right.
Pokémon card dimensions at a glance
In inches: 2.5 inches wide by 3.5 inches tall. This is the standard trading card size, the same as a modern baseball, basketball or football card.
In millimeters: 63 by 88 mm as it is usually listed, or 63.5 by 88.9 mm as an exact conversion of the inch figures.
In centimeters: 6.35 by 8.89 cm.
Shape: a 5 to 7 portrait rectangle with rounded corners. The rounding protects the corners during shuffling and handling, which is also why corner wear is one of the first things a grader looks at.
Why you see two different mm figures
Some guides say 63 by 88 mm and others say 63.5 by 88.9 mm, and it causes more confusion than it should. The difference is rounding. The card is designed around 2.5 by 3.5 inches, and one inch is exactly 25.4 mm, so the precise metric size is 63.5 by 88.9 mm. Accessory makers and many Japanese shops round that down to 63 by 88 mm on their packaging.
For anything practical, the half millimeter does not matter. A sleeve, toploader or binder pocket built for one figure fits a card described by the other. Where it does matter is when you compare a card against a ruler to check whether it is genuine, which we cover below.
What size sleeves fit Pokémon cards?
Pokémon cards take standard size sleeves. Dragon Shield lists its standard sleeves at 66 by 91 mm and says that size fits Pokémon, which leaves a small gap around the card so it slides in without catching a corner.
Perfect fit sleeves are the snug inner layer collectors use when they double sleeve. They sit tight against the card and go inside a standard sleeve, which keeps dust out and stops the card from sliding around.
Avoid small or Japanese size sleeves. Those are made for smaller cards like YuGiOh, which measure 59 by 86 mm. A Pokémon card will not fit properly, and forcing one in can bend it.
If you are deciding between penny sleeves, perfect fits and rigid holders for valuable cards, our guide to toploaders vs sleeves walks through which protection to use when.
What size toploader fits a Pokémon card?
The standard 3 by 4 inch toploader. Ultra Pro's regular 3 by 4 inch toploader is built for standard 2.5 by 3.5 inch cards up to 35 points thick, which covers a regular Pokémon card in a penny sleeve.
Thicker holders exist for cards with patches or extra layers, but you do not need them for normal Pokémon cards. Buying a thicker toploader than the card needs just lets it slide around, which is how edges get dinged.
Binder pages and storage boxes
Standard 9 pocket binder pages are sized for 2.5 by 3.5 inch cards, so Pokémon cards fit them with or without a penny sleeve. Side loading pages are the safer choice for anything you care about, because cards cannot slide out of the top when the binder is tipped.
Storage boxes and deck boxes labelled for standard size cards will also fit Pokémon cards. If you plan to store cards double sleeved, check the box's capacity for sleeved cards rather than raw ones, because sleeves add up quickly.
If you would rather buy supplies in person and check the fit before you pay, our card shop directory lists local stores state by state.
Are Japanese Pokémon cards the same size?
Yes. Japanese Pokémon cards are the same standard size as English cards, so they take the same sleeves, toploaders and binder pages. The myth that they are smaller comes from other Japanese card games, including YuGiOh, that use the smaller 59 by 86 mm format. Do not buy small size sleeves for Japanese Pokémon cards.
Jumbo and oversized Pokémon cards
Jumbo cards are the oversized promos that come in collection boxes and special products. They have never had one official size, and the dimensions have shifted over the years. Current era jumbos are roughly 136 by 187 mm, about 5.4 by 7.4 inches, while older jumbos tend to be taller and narrower at around 145 by 200 mm, about 5.7 by 7.9 inches.
Because the size varies, measure your jumbo card before you buy a sleeve or display case for it, and buy holders sold specifically for jumbo cards of that era. Standard toploaders and binder pages will not fit them.
Pokémon card size in pixels
If you scan or photograph your cards for a collection app, a listing or a digital binder, it helps to know the pixel dimensions. At 300 dots per inch, a 2.5 by 3.5 inch card is 750 by 1050 pixels. At 600 dots per inch it is 1500 by 2100 pixels, which is plenty for zooming in on corners and edges. For a quick web thumbnail, 180 by 252 pixels keeps the same 5 to 7 shape.
When you photograph a card with your phone instead of a scanner, the pixel count matters less than the angle. Shoot straight on, fill the frame and avoid glare so the borders and corners are easy to read.
Can you spot a fake Pokémon card by its size?
Size is one of the easiest first checks. Genuine cards are cut consistently to the standard size, so a card that is noticeably wider, narrower or taller than the cards around it in a stack deserves a closer look. Lay a suspect card directly on top of a card you know is real and line up one corner. If the edges do not match, that is a red flag.
Size alone will not prove a card is real, because good counterfeits get the dimensions right. Check the print quality, the font, the back colors and the holo pattern as well. Our guide to the best apps to spot fake Pokémon cards covers which checks an app can help with and which you still have to do by eye.
How Pokémon cards compare to other cards
Pokémon cards share the standard 2.5 by 3.5 inch size with modern sports cards and most other trading card games, which is why one set of sleeves and toploaders covers most collections. YuGiOh is the main exception at 59 by 86 mm, and it needs its own small size sleeves. A deck of standard poker playing cards is also very close to the same size, which makes it a handy reference if you do not have a Pokémon card nearby.
Frequently asked questions
How big is a Pokémon card in inches? A standard Pokémon card is 2.5 inches wide and 3.5 inches tall, the same size as a modern sports card.
How big is a Pokémon card in mm? It is usually listed as 63 by 88 mm. The exact conversion of 2.5 by 3.5 inches is 63.5 by 88.9 mm, and accessories built for either figure fit the same card.
What size sleeves do Pokémon cards use? Standard size sleeves, which Dragon Shield lists at 66 by 91 mm. Use perfect fit sleeves as an inner layer if you double sleeve, and avoid small or Japanese size sleeves.
What toploader size fits Pokémon cards? The regular 3 by 4 inch toploader, rated for cards up to 35 points thick, fits a standard Pokémon card in a penny sleeve.
Are Japanese Pokémon cards smaller? No. Japanese Pokémon cards are the same size as English cards and use the same sleeves. The smaller size belongs to other Japanese card games such as YuGiOh.
How big are jumbo Pokémon cards? There is no single jumbo size. Current era jumbos are roughly 5.4 by 7.4 inches and older ones are often around 5.7 by 7.9 inches, so measure yours before buying a holder.
