How to Calculate Scrap Silver Value (Step-by-Step Guide 2026)
Step-by-step guide to calculating melt value from purity, weight, and live spot price.
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Finance & Investment
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Troy ounce calculation
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How to Calculate Silver Melt Value
Silver melt value is the intrinsic metal value of a silver item based on its weight, purity, and current spot price. The formula converts grams to troy ounces, applies the purity percentage, then multiplies by the spot price. Every silver item, from a junk silver dime to a 100 oz bar, follows the same three-step calculation.
Troy oz silver = (Weight in grams / 31.1035) × Purity
Melt Value = Troy oz silver × Spot price per troy oz
Example: American Silver Eagle = 31.1035g × 0.999 / 31.1035 × $28.50 = $28.47
If you hold silver to meet religious giving obligations, note that silver nisab (the minimum threshold for zakat) is 595 grams (approximately 19.1 troy oz) of silver. The Zakat Calculator applies this silver nisab automatically to determine your annual zakat liability on precious metals holdings.
Junk Silver Calculator: 90% US Coins
"Junk silver" is the dealer term for US dimes, quarters, half dollars, and dollar coins minted before 1965. These coins are 90% silver and have no numismatic premium and trade purely on silver content. The standard shortcut: every $1 of face value in 90% junk silver contains approximately 0.715 troy ounces of silver.
Silver Content by Coin
| Coin | Weight | Purity | Silver (oz) |
|---|---|---|---|
| Mercury / Roosevelt Dime | 2.50g | 90% | 0.0723 |
| Washington Quarter | 6.25g | 90% | 0.1809 |
| Walking Liberty / Franklin Half | 12.50g | 90% | 0.3618 |
| Morgan / Peace Dollar | 26.73g | 90% | 0.7735 |
At $28.50/oz spot, $1 face value of junk silver = 0.715 × $28.50 = $20.37. A $1,000 face value bag contains ~715 troy oz worth approximately $20,370. Select any coin from the preset dropdown above to calculate melt value instantly.
Sterling Silver Calculator: .925 Jewelry and Flatware
Sterling silver is 92.5% pure silver, marked .925 on jewelry, flatware, and holloware. It is the standard for most silver jewelry sold in the US and UK. To use this as a sterling silver calculator: select "Custom" in the preset dropdown, weigh the item in grams on a digital scale, enter the weight, and set purity to 0.925.
Sterling bracelet: 45g × 0.925 / 31.1035 × $28.50 spot
= 1.3384 troy oz × 0.925 × $28.50
= $35.29 melt value
Jewelry dealers typically pay 70-85% of melt for sterling pieces due to refining costs. Flatware and larger sterling items with less labor content often fetch 85-92% of melt. If you are building silver into a long-term investment portfolio, the Coast FIRE Calculator can show whether your precious metals holdings contribute to your financial independence timeline at an assumed growth rate.
Example Calculation
You have 20 Morgan Silver Dollars. Silver spot price is $28.50/troy oz. Each Morgan weighs 26.73 grams at 90% purity.
Weight: 26.73g / 31.1035 = 0.8594 troy oz
Silver: 0.8594 × 0.90 = 0.7735 oz pure silver
Value each: 0.7735 × $28.50 = $22.05
20 coins: 20 × $22.05 = $441.00 melt value
To model the return on a silver investment over multiple years, accounting for purchases at different prices and eventual sales, the IRR Calculator handles uneven cash flows that a simple silver price formula cannot capture.
Common Mistakes to Avoid
Confusing regular ounces with troy ounces
One troy ounce equals 31.1035 grams, not 28.35g. If your scale shows avoirdupois ounces, multiply by 28.35 to get grams, then divide by 31.1035 for troy ounces. Using the wrong conversion understates silver content by about 9%.
Ignoring purity and treating all silver as fine silver
US quarters and dimes minted before 1965 are 90% silver, not 99.9%. Sterling silver is 92.5%. Treating either as fine silver overstates the melt value by 8-10%. Always set the correct purity for the type of silver you are calculating.
Using the wrong spot price (gold vs silver)
Gold and silver have very different spot prices. Gold trades around $2,000-2,500/oz while silver trades at $25-35/oz. Always confirm you are using the silver spot price, not gold.
Expecting to sell at full spot price
Dealers buy below spot to make a margin. Expect 90-97% of spot for .999 bullion bars and 85-95% for coins. For scrap silver calculation purposes, melt value is the ceiling, not the actual cash offer.
Weighing silver while still in plastic holders
NGC and PCGS holders add significant weight. Weigh only the coin or bar itself. Slab holders can add 20-30 grams, which would substantially overstate the silver content in your calculation.
Frequently Asked Questions
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Sources & References
1
US Mint: Coin Specifications - Silver Coinage ↗
Primary source for the exact weight and purity specifications of American Silver Eagles, Morgan Dollars, Peace Dollars, and other US silver coins.
2
NIST: Handbook 44 - Weights and Measures ↗
Source for the troy ounce to gram conversion (1 troy oz = 31.1035 g) used in all precious metals melt value calculations.
3
Kitco Metals: Silver Spot Price Methodology ↗
Reference for how silver spot prices are determined on the COMEX market and the difference between spot, bid, and ask prices relevant to buying and selling silver.
HR
Hassaan Rasheed
Developer and Researcher, CalculatorFlux
Researches and verifies the formulas, methodology, and source data behind each calculator on CalculatorFlux. All tools are built and checked against the cited references before publication.
Last updated: May 2026