Scrap Gold Calculator - Jewelry and Bullion Value

The scrap gold calculator estimates the fine-gold melt value of jewelry, dental gold, or small bullion before you walk into a buyer’s shop. Dealers quote against fine gold, not against the stamped karat number on a ring, so the first job is to convert karat purity into a fraction of 24. Fourteen-karat gold is 14/24 fine, eighteen-karat is 18/24, and twenty-four-karat is treated as pure. Multiply that fraction by the troy-ounce weight and by the spot price per troy ounce to get a theoretical melt value. Weight must be in troy ounces because published gold prices are almost always per troy ounce, not per avoirdupois ounce or gram. Ten grams is about 0.3215 troy ounces; one avoirdupois ounce is about 0.9115 troy ounces. If you weigh a chain on a kitchen scale in grams, convert before you trust the result. The scrap gold calculator does not convert units for you, and mixing gram weight with an ounce price will overstate value by an order of magnitude. Buyers rarely pay 100% of melt. Refining loss, assay fees, and the dealer’s margin often land in a 70–95% band depending on lot size, purity, and whether stones must be removed. Stones, plating, and hollow findings add weight that is not gold. A 14k piece with a heavy glass stone should be weighed after stones are accounted for, or the melt value will be too high. Hallmarks can be wrong, especially on older costume pieces, so an assay or XRF reading beats a stamped number when the lot is large. Use the estimate to decide whether to sell, keep, or get a second quote, not as a locked offer. Spot prices move through the trading day, and a quote from this morning can be stale by afternoon. Sales may also have tax consequences in your jurisdiction. The figure is an educational melt-value estimate, not an appraisal, not a purchase offer, and not tax advice. Confirm weight, purity, and the live bid with a reputable dealer before you transact.