A standard U.S. quarter coin weighs 0.20 ounces . This is equivalent to 5.67 grams. This weight applies to clad quarters minted since 1965.
Prior to 1965, US quarters were made of silver and weighed slightly more, at 6.25 grams.
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How many ounces is 1 quarter coin?
The weight of a U.S. quarter in grams is 5.67 grams, equal to 0.2 ounces or 0.0125 pounds. This weight has been maintained consistently for all quarters minted after 1965.
How many quarter coins weigh an ounce?
For most purposes, you can say 5 quarters, which weigh exactly 1.0000168 ounces (28.35 grams). (0.2000034 ounces). So there are just under 5 quarters in one ounce (141.748 grams), 4.99991500144 quarters, to be exact.