Turns out that $10 in quarters weighs half a pound. Which means

**one pound**of quarters (which individually weigh**5.67g**), naturally, adds up to $20. Handy, I thought. Looking at the United States Mint's coin specifications page, I learned that, at**2.268g**per dime,**one pound**of dimes also equals $20.What are the weights of US coins?

To test a digital scale if you don't have a special calibration weight you can use coins: (Make sure to use new, shiny coins. Worn coins will weigh less). A U.S. nickel (5-cent coin for non-Americans) weighs exactly

**5.00 grams**and a U.S. cent (since 1983) weighs exactly**2.50 grams**.