How much does a penny weigh?
A U.S. penny weighs 2.5 grams (0.088 ounces), according to the U.S. Mint.
The U.S. Mint states the one-cent coin is made exclusively for collectible sets.
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| Spec | Value |
|---|---|
| Weight | 2.5 g (0.088 oz) |
| Diameter | 19.05 mm (0.75 in) |
| Thickness | 1.52 mm (0.06 in) |
| Composition | 2.5% copper, 97.5% zinc (copper-plated zinc) |
| Edge | Plain |
| Face value | $0.01 |
| Pennies per pound | about 181.4 |
| Pennies per kilogram | about 400 |
The U.S. Mint lists the penny at 2.5 grams (0.088 oz). It is 2.5% copper, 97.5% zinc (copper-plated zinc), 19.05 mm (0.75 in) across and 1.52 mm (0.06 in) thick, with a plain edge. The U.S. Mint states the one-cent coin is made exclusively for collectible sets.
Because each coin weighs 2.5 g, 10,000 pennies ($100) weigh 25,000 g (25 kg, 55.12 lb), and a roll of 50 weighs 125 g (4.41 oz, 0.276 lb). About 181.4 pennies make a pound, and 400 make a kilogram.
Frequently asked questions
How much does a penny weigh in grams?
2.5 grams, or 0.088 ounces.
What is a penny made of?
2.5% copper, 97.5% zinc (copper-plated zinc), according to the U.S. Mint.
How big is a penny?
19.05 mm (0.75 in) across and 1.52 mm (0.06 in) thick.
How many pennies weigh a pound?
About 181.4 (453.59 g divided by 2.5 g).
How much do $100 in pennies weigh?
10,000 coins weigh 25,000 g (25 kg, 55.12 lb).
Sources: U.S. Mint, Coin Specifications. Checked 2026-11-12. Figures described as "about" or "roughly" are arithmetic on these sources.
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General information only. Weights, sizes and counts come from the sources shown on each page and may change; check with your bank or the issuer before you rely on them. Nothing here is financial advice.