The Most Accurate Gold Calculator. Live Prices. Free.

Gold is priced in USD per troy ounce on the global spot market — a benchmark set 24 hours a day by futures exchanges like COMEX. But most Americans encounter gold as jewelry, coins, or scrap pieces measured in grams or pennyweights. That gap between market quoting and everyday units is exactly where confusion starts, and where an accurate calculator becomes essential.

The first step in any gold valuation is converting your item's weight into troy ounces, since that is how the spot price is expressed. One troy ounce equals 31.1 grams or 20 pennyweights — so a 10-gram chain and a 6.4-pennyweight ring are actually the same weight, just described differently. Getting this conversion right before anything else is non-negotiable.

Purity — expressed as karat in the U.S. — determines what fraction of your item is actually gold. Pure 24K gold is 99.9% gold. 18K is 75%. 14K, the most common alloy in American jewelry, is 58.5% gold. 10K, the legal minimum to be sold as gold in the U.S., is 41.7%. Multiply your converted troy-ounce weight by the purity percentage and you have the pure gold content — the only part that has market value.

That pure gold weight, multiplied by today's live spot price, gives you the melt value — the true intrinsic worth of your gold. Every dealer, pawn shop, and refinery starts here. The difference between a fair offer and a bad one usually comes down to how close to melt value the buyer pays. Knowing your melt value before you walk into any negotiation is the single most important step you can take.

This site separates gold pricing into focused tools because one calculator rarely fits every situation. Whether you are calculating scrap gold payout, tracking an investment's return, or simply checking today's price per gram by karat — each tool is built for a specific question. Used together, they give you a complete picture that is much harder to misread or manipulate.