Is a Dime Exactly 0.705 Inches? Fact-Checking Coin Sizes and Weather Scale Discrepancies
By David Miller
Physical coin size influences everything from industrial vending mechanism design to commercial retail packaging. The table below outlines the exact specifications governing all four primary circulating U.S. coins, compiled from official Mint manufacturing standards.
| Coin Denomination | Diameter (Inches) | Diameter (Millimeters) | Thickness (mm) | Reeded Edge Count | Primary Composition |
|---|---|---|---|---|---|
| Dime (10¢) | 0.705 in | 17.91 mm | 1.35 mm | 118 reeds | Cupronickel Clad Copper |
| Penny (1¢) | 0.750 in | 19.05 mm | 1.52 mm | Plain (Smooth) | Copper-Plated Zinc |
| Nickel (5¢) | 0.835 in | 21.21 mm | 1.95 mm | Plain (Smooth) | Cupronickel (75% Cu, 25% Ni) |
| Quarter (25¢) | 0.955 in | 24.26 mm | 1.75 mm | 119 reeds | Cupronickel Clad Copper |
David Miller brings 15 years of experience in global economics, personal finance strategy, and market dynamics. He specializes in turning complex economic trends into actionable insights for everyday readers.
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