One Piece card size and what gear fits

A One Piece Card Game card measures 63x88mm, 0.305mm thick, the same as Magic: The Gathering, Pokemon, Disney Lorcana, and Flesh and Blood. Yes, One Piece is the same size as Pokemon. In inches that's about 2.48 x 3.46, and it means every sleeve, toploader, and binder page built for the "standard" trading card size works for One Piece without exception.

The exact numbers

63mm wide, 88mm tall, 0.305mm thick. Convert to inches with straight division (63 divided by 25.4, 88 divided by 25.4) and you land on 2.48 in by 3.46 in, not the "2.5 x 3.5" figure that gets tossed around for cards generally. That rounder number belongs to sports cards and playing cards (63.5x88.9mm), a slightly bigger card that converts to an exact 2.5 x 3.5 in. One Piece sits a touch under that on both edges, though the difference is small enough that sleeve manufacturers don't bother making a separate size for it.

Bandai launched One Piece on the same physical template as Magic and Pokemon rather than the Japanese small size used by Yu-Gi-Oh!, Cardfight!! Vanguard, and Weiss Schwarz, which is worth knowing if you've got gear from multiple TCGs and aren't sure what crosses over.

What sleeves fit One Piece cards

Standard-size outer sleeves run around 66x91mm across the major brands, Dragon Shield's Matte and Classic lines, KMC's Hyper Mat, Gamegenic's Prime, Ultimate Guard's Katana. That gap over the card's actual 63x88mm size is what lets a card glide into the sleeve instead of jamming on a tight edge. If you're double sleeving a One Piece deck (common once cards start seeing real tournament wear), an inner sleeve goes on first at around 64x89mm, snug enough to hold the card in place under the looser outer layer.

Toploaders and binders

A 35pt toploader, the thinnest and most common weight, measures 69.9x98.4mm on the inside, plenty of room for a raw or lightly sleeved One Piece card. Leaders and other cards that see more handling at the table are still cut to the same 63x88mm size, so there's no separate toploader category to worry about, just the usual choice between a 35pt for everyday cards and a thicker pt rating for anything with extra layers or damage you're trying to stabilize.

Binders are the simplest part of the equation. Any binder built around the standard 63x88mm pocket size holds One Piece cards the way it holds Magic or Pokemon cards, sitting flush without the sliding you'd get from putting a smaller Japanese-size card in the same pocket. If your collection spans One Piece and Yu-Gi-Oh!, keep them in separate binders. A page cut for the bigger standard card won't hold the smaller Yu-Gi-Oh! card snugly, even though the reverse (One Piece in a page meant for the smaller size) usually won't fit at all.

Quick answers

Is One Piece the same size as Pokemon? Yes. Both use the 63x88mm standard trading card size, so sleeves, toploaders, and binder pages are fully interchangeable between the two games.

What size sleeves do One Piece cards need? Standard size, the same sleeves built for Magic and Pokemon, typically around 66x91mm on the outside.

Are One Piece cards thicker than Pokemon cards? Card stock varies a bit by print run and rarity, but the baseline thickness in our data is 0.305mm for both, the same standard figure.

Can I use my Magic sleeves for One Piece? Yes, without any adjustment. They share the identical 63x88mm card size, so there's no separate "One Piece size" to shop for.

If you already collect Magic or Pokemon, the good news is you're not starting a new gear shelf for One Piece. It's the same card, in the same slot, in the same sleeve. The only real decision left is which finish you like shuffling.