📦 Coin Storage & Holder Sizer
Enter a coin's diameter and quantity to get a recommended flip size, the closest standard coin tube, and how many tubes you'll need.
📏 Size Your Storage
📦 Storage Recommendation
A sizing aid based on standard, widely-available supply dimensions — not a guarantee any specific product fits your coin. Always check the listed inner diameter before buying.
Picking the Right Holder
Coin storage comes down to matching a holder's window or tube diameter to your coin's actual size. Too tight and the coin won't seat properly; too loose and it can rattle and pick up handling marks over time.
This tool checks your coin's diameter against standard, widely-available 2x2 flip sizes and the standard U.S. coin-tube lineup (cent, nickel, dime, quarter, half dollar, and silver-dollar-sized tubes), then works out how many tubes a given quantity needs.
❓ Frequently Asked Questions
How do I find my coin's diameter?
Most references (mint specifications, coin catalogs, or the Red Book) list the exact diameter in millimeters for any date and denomination. A digital caliper gives you an exact measurement if you're unsure or working with a foreign or unusual coin.
What's the difference between a flip and a tube?
A 2x2 flip or holder is for individual coins you want to display, handle, or grade-protect one at a time. A tube is for bulk storage of many same-size coins stacked together — cheaper per coin, but not meant for coins you're actively displaying or handling often.
Will any tube of the recommended type actually fit my coin?
This tool matches you to the closest standard tube by diameter, but always double-check the listed inner diameter against your coin before buying — some issues (thicker coins, unusual alloys) may need a specialty holder even if the diameter is close.
What if my coin is bigger than standard flip sizes?
Large medallions, silver rounds, and some world coins exceed standard 2x2 flip windows. Look for oversize holders, museum-style coin capsules, or a custom-cut mat instead.