I searched on Google and found this:

1 cent penny=2.5g's
Nickel=5g's
Dime=2.26g's
Quarter=5.6g's
Dollar coin=8.1g's

For any money bill, it weighs 1gram.

I found it here:
About The United States Mint

Hope that helps.
Nochowderforyou Reviewed by Nochowderforyou on . just got new digital scale...but got questions i jus got it...penny 2.5, dime 2.3 coins that is...is that right? Rating: 5