No, all quarters do not weigh the same. The weight of a quarter can be affected by a variety of factors, such as the country of origin, the year it was minted, and the composition of the coin. For example, Canadian quarters from 1908 weighed 0.20 ounces (or about five grams), while Canadian quarters from 2000 weighed 0.14 ounces (or about four grams). Similarly, U.S. quarters minted before 1968 contained silver and weighed more than those minted after 1968.