US dollar coins have varied in size throughout history. Here’s a breakdown of common dollar coin sizes:
- Sacagawea, Presidential, and American Innovation dollars: These “golden” dollars are all 26.5 mm (1.043 inches) in diameter. They are slightly thicker than a quarter.
- Morgan and Peace dollars: These silver dollars are larger, measuring 38.1 mm (1.50 inches) in diameter.
In short, if you’re talking about the dollar coins currently in circulation, they have a diameter of 26.5 mm. Older, collectible silver dollars are notably larger at 38.1 mm in diameter.
Is a dime 1 inch?
The dime is the smallest in diameter and is the thinnest of all U.S. coins currently minted for circulation, being 0.705 inches (17.91 millimeters) in diameter and 0.053 in (1.35 mm) in thickness.