Enter the number of pennies, nickels, dimes, quarters, half-dollars, and dollar coins you have into the calculator to determine the total coin weight.
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Coin Weight Formula
The following formula is used to calculate the weight of a jar or collection of coins.
W = P*2.5 + N*5 + d*2.268 + Q*5.670 + HD*11.340 + D*81
- Where W is the weight in grams
- P is the number of pennies
- N is the number of nickels
- d is the number of dimes
- Q is the number of quarters
- HD is the number of half dollars
- D is the number of dollar coins
Coin Weight Definition
A coin weight is the total weight of a collection of coins determined by the amount of each type of coin and their respective weights.
The weights of each coin are standardized by the US mint and made to a specific tolerance.
US Coin Weights
The following table outlines the weights of each US coin.
| Coin | Weight (grams) |
| Penny | 2.5g |
| Nickel | 5g |
| Dime | 2.268g |
| Quarter | 5.670g |
| Half Dollar | 11.340g |
| Dollar | 81g |
Example Problem
How to calculate the weight of a jar of coins?
First, determine the numbers of each individual coin.
For this example, the coins are separated and counted. The results are as follows:
- Pennies: 20
- Nickels: 5
- Dimes: 4
- Quarters: 20
- Half Dollar: 10
- Dollar: 1
Next, enter the values into the formula above to calculated the coin weight:
W = P*2.5 + N*5 + d*2.268 + Q*5.670 + HD*11.340 + D*81
= 20*2.5+5*5+4*2.268+20*5.570 + 10*11.340+1*81
= 389.872 grams
To convert this into pounds, divide the result by 454
= 389.872/454
= .8595 lbs
