Modern US cents ("pennies") weigh 2.5 gm.
100 pennies in a dollar - 100 x 100 =10,000 coins.
10,000 x 2.5 = 25,000 gm, or 25 kg.
A kilo is equal to 2.204 US pounds, so 25 kg = 25 x 2.204 = 55.1 US pounds
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Depends on their dates. Pennies before 1982 weigh 3.11 grams. Pennies from 1983 to now weigh 2.5 grams. Pennies dated 1982 could weigh either amount. An ounce equals 28.35 grams. Separate your coins into piles by date and get out your calculator.
7,142 pennies weighs about 39.4 (39.3635369)pounds.
1 billion pennies would weigh 5,511,556.55 pounds. The weight of a penny is 2.5 grams
5,000 pennies= $50.00. The weight is bout 27.5 pounds.
It depends on how you have it. In pennies, it would weigh about 4500 kilograms.