How much does us pennies weigh?

Answer 1

It depends on the date.

• Indian Head pennies dated 1864 to 1909 weigh 3.11 grams.
• The Lincoln, Wheat Ears Reverse penny weighs 3.11 grams except for steel cents made only in 1943 that weigh 2.67 grams.
• The Lincoln, Memorial Reverse penny (1959 to mid 1982) weighs 3.11 grams.
• The Lincoln, Memorial Reverse penny (mid 1982 to present) weighs 2.5 grams.

It's not easy to tell the 1982s apart, so to figure out how many cents weigh a pound (or any other amount) you'd have to decide which date range you wanted to use and eliminate all 1982 coins. A pound is 453.6 gm so just divide that by the weight of the penny date that you decided to use.

See Related Links, below, for a list of all current specifications for other U.S. coins

Read more, below about the various pennies.

Answer 2

One modern (post-1982) US cent weighs 2.5 grams, so 4,000 pennies weigh 10,000 grams, or 10 kg.