A quarter dollar is a common coin used in the United States. It is worth 25 cents and is made of a copper-nickel alloy. The quarter dollar is the same size as a dime, but it is thicker and heavier. The quarter dollar is 0.955 inches (24.26 mm) in diameter and 0.069 inches (1.75 mm) thick. It weighs 5.67 grams.The quarter dollar is slightly larger than a dime, but smaller than a half dollar. It is also smaller than the Canadian quarter, which is 0.984 inches (25.00 mm) in diameter and 0.0705 inches (1.79 mm) thick. The Canadian quarter weighs 6.25 grams.The quarter dollar is a popular coin and is used in many transactions. It is also used in vending machines and other coin-operated machines. The quarter dollar is a convenient size and is easy to carry in a pocket or purse.The quarter dollar is an important part of the United States economy and is used in many transactions. It is a convenient size and is easy to carry. It is also a popular coin and is used in many transactions. The quarter dollar is an important part of the United States economy and is used in many transactions.