Free jewelry and scrap calculator

Calculate the melt value of gold, silver, platinum, or palladium.

Use grams, pennyweight, troy ounces, or regular ounces. Subtract stones and other non-metal weight, choose the purity, and use a current price per gram. The result estimates the value of the precious metal itself before refining costs or any resale margin.

Melt value = metal weight in grams × purity × spot price per gram. Metal weight is the total weight minus stones and other non-metal parts. For a 10-gram, 14-karat gold piece, 14/24 of the weight is gold—about 5.83 grams.

Price-to-melt ratio = full buying cost ÷ estimated melt value. A result below 1 means the asking price and added buying costs are below the metal estimate. It does not mean you can resell the piece for that amount or make a profit. See a full price-to-melt example before deciding whether a listing is worth a closer look.

Looking at a particular piece? Read the gold, silver, platinum, or palladium guide for the marks and weight questions that matter most. For gold, compare the current price per gram by karat, use the pennyweight calculator, check 10K, 14K, 18K, 22K, or 24K, or total a mixed-karat estate or auction lot. For common non-gold marks, use the dedicated 999 fine silver, 925 sterling silver, Pt950 platinum, or Pd950 palladium page.

Estimate the metal value yourself.

Enter the item's total weight and subtract any known stone, watch-movement, or other non-metal weight. When a current market reference is available, its price per gram appears below; you can change it. Add the asking price and buying costs to compare the full cost with melt. The result is an estimate, not a resale offer.

Checking the reference price. You can also enter your own.

Want SpotMelts to do the comparing for you?

Membership opens the complete searchable catalog, with no credits or per-listing charges. Search by metal and sort by price-to-melt ratio whenever a listing has enough price, weight, and purity evidence. $9.99 for the first month, then $49.99/month.

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Check the metal before trusting the math.

Gold: 10K is about 41.7% gold, 14K about 58.3%, 18K 75%, and 22K about 91.7%. A stamp helps, but it does not prove authenticity. Check whether the stated weight includes stones, clasps, or parts made of another metal.

Silver: Common fineness figures include 999 fine silver, 958 Britannia silver, 925 sterling, and 800 silver. A mark is a useful clue, not a test result. Silver-plated objects should not be valued as solid silver by total weight.

Platinum: Common fineness figures include 999, 950, 900, and 850. Confirm the mark refers to platinum, and remove stones and mixed-metal components from the weight.

Palladium: Common fineness figures include 999, 950, and 500. Palladium and platinum have different market prices, so confirm the metal before using the weight.

Copper: Copper jewelry and scrap can contain other materials. Use a verified copper weight and the right price per gram; a plated finish is not the same as solid copper.

Weight conversions: 1 pennyweight is 1.5552 grams, 1 troy ounce is 31.1035 grams, and 1 regular ounce is 28.3495 grams. Precious-metal spot prices are normally quoted by the troy ounce, not the regular ounce.

A low asking price is only the start.

Recheck the listing itself. A piece may have sold, been repriced, or returned to stock. Add shipping, tax, fees, and any refining or testing costs. If it is an auction, the current bid is not the final price. A seller's stated weight or purity can be wrong, and a marketplace page may show several different products together.

SpotMelts compares listings with metal-value estimates and checks whether a buying path is visible. The public feed shows opportunities three hours after members see them. Check every seller page again before you buy; no listing or return is guaranteed.

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