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The Melt Value Formula

Calculating coin melt value comes down to one equation:

Melt Value = Number of Coins × ASW × Spot Price

Where:

• Number of Coins — How many coins of the same type you have
• ASW — Actual Silver Weight, the troy ounces of pure silver in one coin. For gold coins, use AGW (Actual Gold Weight).
• Spot Price — The current market price per troy ounce of the metal

That’s it. Three numbers multiplied together. The trick is getting the ASW right — and that’s where most people stumble.

Worked Example: 10 Mercury Dimes (Silver)

Say you have 10 Mercury dimes and silver is at $30.00 per troy ounce.

1. Count: 10 dimes
2. ASW: Each Mercury dime contains 0.0723 troy oz of pure silver
3. Spot price: $30.00/oz
4. Calculate: 10 × 0.0723 × $30.00 = $21.69

Ten dimes with a face value of $1.00 contain $21.69 worth of silver. That gap between face value and melt value is exactly why silver coins disappeared from circulation.

Worked Example: 2 Krugerrands (Gold)

Now consider 2 Krugerrands with gold at $2,400 per troy ounce.

1. Count: 2 coins
2. AGW: Each Krugerrand contains exactly 1.000 troy oz of pure gold (the coin weighs 1.0909 oz total, but it’s 22 karat — the pure gold content is 1.000 oz)
3. Spot price: $2,400/oz
4. Calculate: 2 × 1.000 × $2,400 = $4,800.00

Notice that even though a Krugerrand weighs 1.0909 troy ounces, you only multiply by 1.000 — the AGW — because the remaining 0.0909 oz is copper alloy, not gold.

Circulated vs. Uncirculated Weight

Coins that spent decades in circulation lose metal. A worn silver dime contains slightly less silver than a pristine one. Dealers handle this by using two different standards:

• Uncirculated ASW — The full, as-minted silver content. Use this for coins in mint-state condition.
• Circulated ASW — A reduced figure that accounts for average wear. For 90% U.S. silver, the standard convention is 0.715 oz per dollar of face value (instead of 0.7234 oz for uncirculated).

For most practical purposes — buying a roll from a dealer, valuing a junk-silver lot — circulated weight is the right number. If your coins are clearly worn, use the circulated figure. If they’re bright and sharp, use uncirculated. The difference is typically 1–2%, which matters on large quantities.

ASW & AGW Reference Table

Actual Silver Weight and Actual Gold Weight for the most commonly traded coins:

• Mercury Dime — ASW: 0.0723 oz (circulated: 0.0715 oz)
• Roosevelt Dime (pre-1965) — ASW: 0.0723 oz (circulated: 0.0715 oz)
• Washington Quarter (pre-1965) — ASW: 0.1808 oz (circulated: 0.1786 oz)
• Standing Liberty Quarter — ASW: 0.1808 oz (circulated: 0.1786 oz)
• Franklin Half Dollar — ASW: 0.3617 oz (circulated: 0.3575 oz)
• Walking Liberty Half — ASW: 0.3617 oz (circulated: 0.3575 oz)
• Kennedy Half (1964) — ASW: 0.3617 oz (circulated: 0.3575 oz)
• Kennedy Half (1965–1970) — ASW: 0.1479 oz (40% silver)
• Morgan Dollar — ASW: 0.7734 oz (circulated: 0.7650 oz)
• Peace Dollar — ASW: 0.7734 oz (circulated: 0.7650 oz)
• American Silver Eagle — ASW: 1.000 oz
• Canadian Silver Maple (pre-2018) — ASW: 1.000 oz (originally .9999)
• Krugerrand — AGW: 1.000 oz
• Canadian Gold Maple Leaf — AGW: 1.000 oz
• American Gold Eagle (1 oz) — AGW: 1.000 oz
• American Gold Eagle (1/2 oz) — AGW: 0.500 oz
• American Gold Eagle (1/4 oz) — AGW: 0.250 oz
• American Gold Eagle (1/10 oz) — AGW: 0.100 oz

For 90% U.S. silver, a useful shortcut: $1.00 face value = 0.715 oz silver (circulated) or 0.7234 oz (uncirculated). Multiply your total face value by the right factor, then multiply by spot price.

Common Mistakes

• Confusing face value with silver value. A dime’s face value is $0.10. Its silver value might be $2.17. These numbers have nothing to do with each other. Melt value is about metal content, not the number stamped on the coin.
• Confusing purity with weight. A Krugerrand is 22 karat (91.67% gold) but contains exactly 1 oz of pure gold. The total coin weight is 1.0909 oz. Using the gross weight instead of AGW overstates your value by including copper. Always use ASW or AGW — the pure metal content — not the total coin weight.
• Using the wrong ASW for circulated coins. If you buy a worn batch of dimes and use the uncirculated ASW of 0.0723, you’ll overstate your silver by about 1%. For a few coins, that’s pennies. For $1,000 face value, it’s hundreds of dollars.
• Forgetting to multiply by the number of coins. It sounds obvious, but people frequently calculate the value of one coin and assume that’s the total. Always multiply by count first.
• Ignoring premiums. Melt value is the floor, not the ceiling. Dealers charge premiums above melt for popular coins, and numismatically valuable pieces can be worth many times melt. Know what you have before you sell at spot.

When to Use a Calculator vs. Manual Calculation

Manual calculation works fine for quick estimates — one coin type, one spot price, back of the envelope. But reach for a calculator when:

• You’re working with multiple coin types in a single lot (e.g., a bag with dimes, quarters, and halves)
• You need current spot prices rather than a rough guess
• You want to compare melt value against what a dealer is offering to make sure the deal is fair
• You’re valuing a large collection where small ASW errors compound into real money

Our Coin Calculator handles all of this automatically — enter your coins, get instant melt values at live spot prices, no math required.

Key Takeaways

The melt value formula — count × ASW × spot price — is straightforward. The substance is in the details: knowing the correct ASW for your coin type, adjusting for circulated vs. uncirculated condition, and never confusing total coin weight with pure metal content. Face value tells you what the coin was worth as money; melt value tells you what the metal inside it is worth today. Those are different conversations, and only one of them matters when you’re buying or selling silver and gold by weight.

Ready to skip the math? Try the Coin Calculator →