how much does a penny weigh

A modern U.S. penny weighs 2.5 grams, which is about 0.088 ounces.

Quick Scoop: Penny Weight Basics

• Most U.S. pennies you see today (minted after 1982–83) weigh 2.5 grams.

• Older U.S. pennies (pre‑1982) generally weigh 3.11 grams.

• In ounces, that’s roughly 0.088 oz for modern pennies and 0.109–0.11 oz for older ones.

Why the Weight Changed

In the early 1980s, the U.S. Mint switched from mostly copper pennies to pennies with a zinc core and a thin copper plating. This change cut costs and reduced the weight from 3.11 grams to 2.5 grams per coin.

• Pre‑1982 penny: about 95% copper, 5% zinc, 3.11 g.

• Post‑1982 penny: about 97.5% zinc, 2.5% copper (plating), 2.5 g.

1982 is a transition year, so pennies from that year can be either weight.

Fun Mini Facts

• The very first U.S. pennies in the 1790s weighed around 13.48 grams and were pure copper—much heavier than today’s coin.

• A British penny today is around 3.56 grams , so it’s noticeably heavier than a modern U.S. penny.

• In 2024, the U.S. Mint reported losing tens of millions of dollars producing pennies because they cost more to make than they’re worth.

If You’re Just Here for a Fast Answer

• Modern U.S. penny (most pennies today): 2.5 grams ≈ 0.088 oz.

• Older copper U.S. penny (pre‑1982): 3.11 grams ≈ 0.11 oz.

Bottom note: Information gathered from public forums or data available on the internet and portrayed here.