Use the card’s actual dimensions and the sleeve’s usable inside dimensions. For a deck box, measure its interior and the thickness of the complete sleeved stack, including the extras you intend to carry.
Use measured usable inside dimensions. Sleeve outer dimensions and advertised deck capacity alone cannot establish fit. Measurements are calculated locally in your browser.
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Make the measurements comparable
A sleeve’s advertised outside size may not describe its usable interior. A snug dimensional fit is also different from comfortable insertion. Keep width, height, and stack depth in consistent units and allow the clearance you actually need.
Deck capacity depends on card and sleeve thickness, double sleeving, dividers, tokens, and how tightly the stack is packed. A printed “100-card” or “200-card” label does not prove that a particular configuration fits. Use a representative measured stack and reserve space for the accessories you will store.
The result checks the supplied geometry. It does not test seam quality, long-term card protection, latch pressure, or the behavior of a flexible case. If a required measurement is unknown, keep the capacity conclusion unverified.