How Much does 100 Pennies Weigh?

To determine how much 100 pennies weigh you will need to know what type penny. Most pennies made before 1982 weighed 3.11 grams (100 * 3.11=311 grams). For pennies made after 1982 they weighed 2.5 grams (100 * 2.5=250 grams).