Since a stamp costs 44 cents, can you mail 44 pennies using just one stamp? Let’s figure it out.
The US Post Office says that you can mail go up to one ounce with a 44-cent stamp.
How much does a penny weigh? The US Mint tells us that one penny weighs 2.500 grams.
How 2.5 gram pennies fit into one ounce? Google tells us 2.500 grams = 0.0881849049 ounces.
Let’s do the math. Google tells us that 11.3398092 pennies fit into 1 ounce.
Answer: You can mail up to 11 pennies with one 44-cent stamp.
In 2004, I asked this very same question and Tom answered the closest with 10 pennies. I can’t remember if I ever mailed him the pennies. So I mailed him the pennies on Friday. Tom, you’ll be getting your pennies soon! (unless if they get squeezed out of the envelope while going through the US Post Office processing rollers)