As of 2014, one U.S. penny weighs 2.5 grams and is made of 2.5 percent copper plating that covers a core of zinc. One penny is 19.05 millimeters in diameter and 1.52 millimeters thick. More » Business & Finance Currency & Conversions

With one quarter weighing 5.670 grams, it takes approximately 17.64 quarters to equal 100 grams. As of 2014, the quarter is the fourth heaviest of the seven U.S. coins in production, after the Presidential and Native Ame... More » Science Measurements

Since U.S. pennies weigh 2.5 grams each, it takes 40 pennies to make 100 grams. However, pennies minted before 1982 weigh 3.11 grams, so it would take only 33 of them to add up to 100 grams. More »

Pennies produced by the U.S. Mint since 1982 are an alloy of 2.5 percent copper and 97.5 percent zinc. The penny weighs 2.5 grams, so each penny contains 0.0625 grams of copper. More »

According to the U.S. Mint, a quarter weighs 5.670 grams or slightly more than 0.2 ounces. It's heavier than all coins of lesser value, but the half-dollar weighs twice as much. More »

With a weight of 5 grams, the U.S. nickel weighs twice as much as a penny and more than double the weight of a dime. The nickel is worth 5 cents. More » Business & Finance Currency & Conversions

A nickel weighs 5 grams. It is one of the lightest coins, with the half dollar weighing the most out of all American coins at 11.340 grams. More » Business & Finance Currency & Conversions