US Coin Sizes in mm

• What is the diameter of a quarter? The U.S. Quarter minted in various types since 1828 is 24.26mm or .955 inches in diameter and can all be protected in coin storage for quarters shown here.

• What is the diameter of a dime? The U.S. Dime minted in various types since 1829 is 17.91mm or .705 inches in diameter and can all be protected in coin storage for dimes shown here.

• What is the diameter of a nickel? The U.S. Nickel minted in various types since 1883 is 21.21 mm or .835 inches in diameter and can all be protected in coin storage for nickels shown here.

• What is the diameter of a penny? The U.S. Penny minted in various types since 1858 is 19.05mm or .75 inches in diameter and can all be protected in coin storage for pennies shown here.

As always, please remember to measure your actual coin with a coin caliper (digital or brass version) to ensure that you get the perfect fit in a SAFE airtight coin capsule, page or coin case. Or alternatively, you could also print our new handy coin template and lay your coin directly on the sheet to get the proper size.  The following chart provides estimates of popular coinage for your convenience.

Please also take a look at our new US Coin Reference Chart sorted by Face Value for our Coin Cases or take a look at our wide variety of coin cases and other coin collecting supplies available.