Scrap Gold Calculator Guide: How Melt Value Is Estimated

A scrap gold calculator estimates the melt value of old, broken, unwanted, or scrap gold items. It uses gold weight, karat purity, and gold price to estimate the value of the pure gold content.

Use the Calzivo Scrap Gold Calculator to estimate melt value before comparing buyer or refiner offers.

What Is a Scrap Gold Calculator?

Simple Definition

A scrap gold calculator is a tool that estimates the metal value of gold items based on weight and purity.

What Scrap Gold Usually Includes

Scrap gold can include:

• broken chains
• old rings
• damaged bracelets
• mismatched earrings
• dental gold
• small gold lots
• unwanted jewelry
• items sold mainly for metal content

What Melt Value Means

Melt value is the estimated value of the pure gold content if the item were melted and refined. It is not always the same as a cash offer.

How Scrap Gold Melt Value Is Estimated

Gold Spot Price

The gold spot price is the market reference price for pure gold. It may be quoted per troy ounce or converted to price per gram.

Gold Weight

The calculator needs the gold weight. Use the correct unit: grams, pennyweights, or troy ounces.

Karat and Purity

Karat tells you how much pure gold is in the item. 14K gold contains less pure gold than 18K gold at the same weight.

Unit of Measurement

The unit must match the gold price. If using a price per gram, use grams. If using a price per troy ounce, use troy ounces.

Refining or Buyer Payout Percentage

Some scrap calculators allow a payout percentage. This estimates how much of melt value a buyer may pay after costs and margin.

Scrap Gold Calculator Formula

Melt Value = Gold Weight x Purity x Gold Price

Melt Value = Weight x Purity x Gold Price Per Unit

How Karat Converts to Purity

Purity = Karat ÷ 24

Examples:

10K = 10 ÷ 24 = 0.4167
14K = 14 ÷ 24 = 0.5833
18K = 18 ÷ 24 = 0.75
24K = 24 ÷ 24 = 1.00

How Grams, Pennyweights, and Troy Ounces Affect the Result

Gold units are not interchangeable. A troy ounce is different from a regular ounce. Use the Unit Converter if you need help converting units.

Example: Estimate Melt Value for 14K Gold

Assume:

Weight = 15 grams
Karat = 14K
Gold Price = $70 per gram

Calculation:

Purity = 14 ÷ 24 = 0.5833
Melt Value = 15 x 0.5833 x 70 = $612.47

Common Karat Values Used in Scrap Gold Calculations

10K Gold

10K gold is about 41.67% pure gold.

14K Gold

14K gold is about 58.33% pure gold.

18K Gold

18K gold is 75% pure gold.

22K Gold

22K gold is about 91.67% pure gold.

24K Gold

24K gold is treated as pure or nearly pure gold for most estimates.

Why Mixed Karat Items Should Be Calculated Separately

A mixed lot may include 10K, 14K, and 18K items. Each karat should be calculated separately, then added together.

How to Use a Scrap Gold Calculator

Step 1: Weigh Your Gold

Weigh each item or each karat group. Remove non-gold pieces if possible.

Step 2: Identify the Karat or Purity

Look for marks such as 10K, 14K, 18K, 22K, 24K, 417, 585, 750, 916, or 999.

Step 3: Choose the Correct Weight Unit

Select grams, pennyweights, or troy ounces based on your measurement.

Step 4: Check the Current Gold Spot Price

Use a current price because gold values move.

Step 5: Review the Estimated Melt Value

Treat the result as an estimate, not a final cash offer.

Scrap Gold Calculator Examples

Example: 10K Scrap Gold Value

Weight = 10 grams
Purity = 10 ÷ 24 = 0.4167
Gold Price = $70 per gram
Melt Value = 10 x 0.4167 x 70 = $291.69

Example: 14K Scrap Gold Value

Weight = 10 grams
Purity = 14 ÷ 24 = 0.5833
Gold Price = $70 per gram
Melt Value = $408.31

Example: 18K Scrap Gold Value

Weight = 10 grams
Purity = 18 ÷ 24 = 0.75
Gold Price = $70 per gram
Melt Value = $525

Example: Multiple Gold Items With Different Karats

Calculate each group separately:

10K items = $291.69
14K items = $408.31
18K items = $525
Estimated Total = $1,225

Example: Estimate Buyer Payout After Refining Fees

If melt value is $600 and a buyer pays 90%:

Estimated Payout = 600 x 0.90 = $540

Use the Percentage Calculator for payout percentage checks.

Melt Value vs Cash Offer

Why Melt Value Is Not Always the Final Offer

Melt value is the metal estimate. A buyer offer may be lower.

Refining Costs and Dealer Margins

Buyers may subtract costs or apply a payout percentage to cover business margin and refining.

Testing, Assay, and Purity Adjustments

The final offer may change after testing confirms actual gold purity.

Why Buyers May Pay Below Spot Value

Buyers often pay below spot value because they must manage costs, risk, and resale or refining processes.

Common Uses of a Scrap Gold Calculator

Old or Broken Jewelry

Estimate value before selling broken or unwanted pieces.

Gold Chains, Rings, and Bracelets

Use weight and karat to estimate metal value.

Dental Gold and Small Scrap Lots

Dental gold can contain mixed metals, so testing may be needed.

Comparing Buyer Offers

Use the estimate as a baseline when comparing offers.

Estimating Value Before Selling

A calculator gives you a starting point before speaking with buyers.

Common Scrap Gold Calculation Mistakes

Using Total Jewelry Weight Without Adjusting for Purity

The full item weight is not pure gold unless it is 24K.

Mixing Different Karats Together

Calculate different karats separately.

Confusing Ounces With Troy Ounces

Gold pricing commonly uses troy ounces.

Ignoring Buyer Payout Percentage

Cash offers may be below melt value.

Expecting Melt Value to Equal Cash Offer

Melt value is an estimate, not a guaranteed payout.

FAQs

How is scrap gold melt value calculated?

Multiply weight by purity and gold price per unit.

What is the difference between melt value and resale value?

Melt value is based on gold content. Resale value may include design, brand, condition, or market demand.

How much is 14K scrap gold worth?

It depends on weight and current gold price. 14K gold is about 58.33% pure gold.

Why do gold buyers pay less than melt value?

Buyers may deduct refining costs, testing costs, transaction costs, risk, and profit margin.

Should I weigh gold in grams, pennyweights, or troy ounces?

Use the unit that matches your calculator and gold price. Grams are common for small items, while spot prices are often quoted per troy ounce.

Final Note

A scrap gold calculator is useful for estimating melt value, but the final cash offer may be different. Use accurate weight, correct karat, current price, and realistic payout assumptions.

Use the Calzivo Scrap Gold Calculator for scrap estimates or the Gold Calculator for general gold value checks.