Coins to Dollars Calculator (pennies, nickels, dimes, quarters → $)

Understanding the coins to dollars calculator — concept and principle

This calculator adds up a pile of US coins: pennies, nickels, dimes, quarters, half dollars and dollar coins. It gives the total in dollars and cents, the number of coins and the total weight in grams and pounds. People counting a coin jar, children learning money, and cashiers checking a till use it.

Count each coin by its value — with the default inputs: $26.22.

How it is calculated

Total in cents = pennies × 1 + nickels × 5 + dimes × 10 + quarters × 25 + half dollars × 50 + dollar coins × 100
Total in dollars = total cents ÷ 100
Number of coins = sum of all counts
Weight (g) = pennies × 2.500 + nickels × 5.000 + dimes × 2.268 + quarters × 5.670 + half dollars × 11.340 + dollar coins × 8.100
Weight (lb) = grams ÷ 453.59237

Counts must be whole numbers.

The principle

Each coin is worth a fixed number of cents, so the total is a weighted sum. Working in whole cents avoids the rounding errors that can appear when adding many decimal amounts. The weights are the US Mint specifications for current coins. Because each coin type has a standard weight, a weighed pile of a single coin type can be turned into a count, but a mixed jar cannot be valued accurately from weight alone.

Worked example

Defaults: 237 pennies, 41 nickels, 58 dimes, 64 quarters, no half dollars or dollar coins.

Cents = 237 + 41 × 5 + 58 × 10 + 64 × 25 = 237 + 205 + 580 + 1,600 = 2,622.
Total = 2,622 ÷ 100 = $26.22.
Coins = 237 + 41 + 58 + 64 = 400.
Weight = 592.5 + 205 + 131.544 + 362.88 = 1,291.9 g = 2.848 lb.

Each point is the calculator re-run with only “Quarters (25¢)” changed; the gold point is the default example. Change the inputs above and this chart follows your numbers.

Quarters (25¢)	Total value (US dollars)
16	$14.22
32	$18.22
48	$22.22
64	$26.22
80	$30.22
96	$34.22
128	$42.22

How to read the result

The total is exact if your counts are right. Coin-counting machines in shops often charge a fee, so check the percentage before using one, or roll coins yourself for the bank. The weight helps when carrying or posting coins; about 1.3 kg here.

Common mistakes

Miscounting when sorting by hand; count in stacks of ten.
Estimating a mixed jar from its weight.
Including foreign or commemorative coins, which may have different values or weights.
Forgetting that pre-1983 pennies are heavier (3.11 g) than the current 2.5 g.

Keep in mind: Weights are specifications for current coins; older, worn or commemorative coins can differ. Weighing gives only an estimate.

Frequently asked questions

How many quarters make 10 dollars?

40 quarters, since each is 25 cents.

How much does a penny weigh?

A current US cent weighs 2.5 g according to the US Mint.

Can I find the value of coins by weight?

Only for a single coin type. For mixed coins, sort and count them.

Sources: United States Mint, "Coin Specifications"

Checked 9 Nov 2026. United States Mint, “Coin Specifications” (face values and weights of the cent 2.50 g, nickel 5.00 g, dime 2.268 g, quarter 5.67 g, half dollar 11.34 g and dollar 8.10 g); 100 cents = 1 dollar.

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