Enter the total weight into the calculator to determine the weight of a quarter of the total. This calculator helps in dividing the weight into four equal parts.
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Quarter Weight Formula
Total Weight (g) = N × w N = Amount × k Face Value ($) = N × 0.25
- N = number of quarters
- w = weight per quarter in grams (5.670 g modern clad, 6.250 g pre-1965 silver)
- Amount = your input value (dollars, quarters, rolls, or boxes)
- k = conversion factor: 4 (dollars), 1 (quarters), 40 (rolls), 2,000 ($500 boxes)
For the reverse mode, divide the scale weight in grams by w to estimate the count, then multiply by $0.25 for face value. Weights assume clean, uncirculated coins with no wrappers. Worn coins, dirt, and paper rolls each add small amounts of mass.
Reference Tables
Use these as quick checks against the calculator output.
| Quantity | Face Value | Modern (g) | Modern (lb) | Silver (lb) |
|---|---|---|---|---|
| 1 quarter | $0.25 | 5.67 | 0.0125 | 0.0138 |
| 1 roll (40) | $10.00 | 226.8 | 0.50 | 0.55 |
| $100 | $100.00 | 2,268 | 5.00 | 5.51 |
| 1 box (2,000) | $500.00 | 11,340 | 25.0 | 27.6 |
| $1,000 | $1,000.00 | 22,680 | 50.0 | 55.1 |
| Quarter Type | Years | Weight | Composition |
|---|---|---|---|
| Modern clad | 1965–present | 5.670 g | Cu-Ni clad on Cu core |
| Silver Washington | 1932–1964 | 6.250 g | 90% Ag, 10% Cu |
| Silver proof (modern) | 1992–present | 6.250 g | 90% Ag (pre-2019), 99.9% Ag (2019+) |
Worked Example
You have a bag that weighs 4.5 lb on a kitchen scale and you want to know what it is worth in modern quarters.
- Convert: 4.5 lb × 453.592 = 2,041.16 g
- Divide by per-coin weight: 2,041.16 ÷ 5.670 = 360.0 quarters
- Face value: 360 × $0.25 = $90.00 (nine full rolls)
Why your scale reading might be off: a paper coin wrapper adds roughly 1 to 2 g, heavy circulation wear can shave 1 to 3% off a coin, and inexpensive kitchen scales drift at low weights. If the calculator rounds to a whole count and the residual is more than a gram or two per expected coin, weigh again with the coins loose.
Can you spot silver quarters by weight? Yes, on a precise scale. A silver quarter is about 0.58 g heavier than a clad one. A roll of 40 silver quarters weighs 250 g versus 227 g for clad, a 23 g difference that any 0.1 g jewelry scale will show clearly.