Count USD or EUR coins to calculate total face value, coin count and estimated standard weight, with a denomination breakdown.
Formula and sources updated · Data sources · 2View algorithm, constants and default inputs (JSON)
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| Denomination | Total coins | Total value | g |
|---|---|---|---|
| $0.01 | 0 | 0.00 | 0.000g |
| $0.05 | 0 | 0.00 | 0.000g |
| $0.10 | 0 | 0.00 | 0.000g |
| $0.25 | 0 | 0.00 | 0.000g |
| $0.50 | 0 | 0.00 | 0.000g |
| $1.00 | 0 | 0.00 | 0.000g |
Count current U.S. or euro coins to total their face value and estimated weight. This is a cash-counting tool, not a collectible appraisal or currency converter. Weight uses modern standard specifications; older U.S. coins and wear can differ.
Recomputed from this page's implementation at build time · checked 2026-10-22
Every coin in this calculator is worth its face value and nothing else, which makes the weight column the interesting one. Three of the six US denominations carry exactly the same mass per cent, so swapping quarters for dimes changes the coin count without changing the weight at all.
| 100 | 500 | 1,000 | 5,000 | |
|---|---|---|---|---|
| Weight in pounds | 0.55 | 2.76 | 5.51 | 27.56 |
The relationship is perfectly linear, which is the point: there is no threshold at which a penny jar becomes cheaper to carry. Every hundred pennies adds about half a pound, whether it is the first hundred or the fiftieth.
Forty coins, half a pound, and an average per coin that equals the quarter itself because only one denomination was entered. This is the case a bank teller would hand you: ten dollars is one standard roll, and the roll weighs about the same as a small apple.
Twice as many coins, and the weight does not move a single gram. Dimes, quarters and half dollars all carry 0.2268 grams per cent of face value — the ratio was fixed when the coins were specified, so exchanging one for the other at face value is weight-neutral by design.
A thousand coins to carry the same ten dollars, and eleven times the mass. The penny is the outlier in the set: one cent of face value weighs two and a half grams, against 0.2268 for the dime sitting next to it. No other denomination is anywhere near that heavy for its worth.
Two and a half tonnes for ten thousand dollars, which is the whole reason coin-counting machines take a percentage. It is also the ceiling of the page: a million per denomination is the cap, so this is the heaviest single-denomination answer available here.
Read the last two rows carefully. The average per coin is not a real coin — it is the total divided by thirteen, so it lands between the values of two actual denominations. And the denomination named is dimes, not the quarter, because that line ranks by the value each group contributes in total, and three dimes outweigh one quarter.
inputError
One penny over the cap
Each denomination is capped at a million, which allows six million coins in total on the dollar side. Beyond that the weight figures stop being something a person could physically move, and the answer is refused rather than printed as an abstraction.
inputError
Two and a half pennies
Coins are whole objects. A fractional count is rejected instead of being rounded, because rounding would silently change the total the person was trying to verify.
inputError
Minus one nickel
A negative count has no physical meaning. It is refused rather than treated as a correction, so the six fields can never quietly cancel each other out.
inputError
Pounds sterling
Two currencies are supported, with six US denominations and eight euro denominations. An unsupported code is refused rather than paired with the nearest coin set, which would print a pound sign in front of a dollar total.
Calculator Academy coin weightchecked 2026-10-22
Why they built it that wayThe coin table is static reference data, not a live denomination lookup. Static tables are cheap to keep and hard to break, but nothing rechecks them, which is how a dime ends up listed at eight grams.
Their penny switch is the one capability this page lacks, and it is not cosmetic: a jar of copper pennies is a quarter heavier than the same count of zinc ones. Their worked table also lists the dollar coin at 81 grams against the mint specification of 8.1, which would turn a thousand dollar coins into 81 kilograms rather than 8.1 — worth checking against your own count before trusting either figure.
Enter 40 quarters: ten dollars and half a pound. Clear it and enter 100 dimes: the same ten dollars and exactly the same weight, because both coins carry 0.2268 grams per cent of face value. Then set pennies to 1000000 and watch the pounds column pass five thousand.
Checked each denomination's mass against its mint specification rather than a reference table · impl 7a402714
These calculators give general mathematical results. They suit study, planning and estimation — verify anything that feeds a graded submission, a published figure or a financial commitment.
This record describes the implementation used by this page. It is not independent validation. External references, when available, support only the stated formula or definition; estimates and custom rules retain their own assumptions.
V = Σ cₖvₖ; W = Σ cₖgₖ
For each denomination, multiply its count by its face value and add the subtotals. Estimate weight by multiplying each count by the standard grams per coin. Only the selected currency is included; USD and EUR are not converted or added together. The largest face-value contribution is the denomination with the largest subtotal, not necessarily the highest-value single coin. Weights use modern standard specifications; older U.S. coins and wear can differ. This is not a collectible appraisal.
Count current U.S. or euro coins to total their face value and estimated weight. This is a cash-counting tool, not a collectible appraisal or currency converter. Weight uses modern standard specifications; older U.S. coins and wear can differ.
USD: 1¢, 5¢, 10¢, 25¢, 50¢, $1. EUR: €0.01, €0.02, €0.05, €0.10, €0.20, €0.50, €1, €2.