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Gold Price Calculator

Use this free gold price calculator to find what your gold is worth — coins, bars, or jewelry. Enter the weight, pick the unit and karat, and the calculator multiplies the pure gold content by the spot price. Switch to scrap value mode and it also works as a scrap gold calculator, showing the melt value of old or broken jewelry.

How it works

The value of a piece of gold is the value of the pure gold inside it, and nothing else. It depends on three things: how much the item weighs, how pure the gold is, and the current spot price of gold. Multiply those three together and you have the value. Everything else about the piece — its design, its maker, its history — may matter to a collector, but it is not part of this number.

The spot price is the market price of one troy ounce of pure gold for immediate delivery, quoted in dollars. This page opens with a default of $4,150 per troy ounce, the spot price as of November 7, 2026 — but spot prices move every trading day, so the field is editable. There is no free live gold price API, so this calculator never fetches a live price on its own; what you see is always the number in the field, so replace it with the latest quote before you buy or sell.

Karat measures purity out of 24 parts. 24K is pure gold, 100%. 22K is 22 parts gold out of 24, or 91.7% pure, and is common for coins and jewelry in South Asia and the Middle East. 18K is 75% pure and is the usual choice for fine jewelry. 14K is 58.3% pure and 10K is 41.7% pure; both are common in the United States because the added metals make the gold harder and more durable for everyday wear. The karat is usually stamped on the piece — "22K", "750" for 18K, "585" for 14K, "417" for 10K — and if there is no stamp, a jeweler can test it.

The unit matters because gold is weighed in troy ounces, not ordinary ounces. A troy ounce is 31.1035 grams, while a regular avoirdupois ounce is 28.3495 grams, so a troy ounce is about 10% heavier. A kitchen scale measures avoirdupois ounces, while a coin shop scale measures troy ounces, and mixing the two up changes the value by roughly a tenth. This calculator accepts troy ounces, grams, kilograms, tolas (1 tola = 11.6638 grams = 0.375 troy ounces), and avoirdupois ounces, and converts everything to troy ounces before doing the math.

Scrap value mode uses the same math, but it is framed for selling: it calls the result the melt value and reminds you that a dealer pays below it. That mode is this page's scrap gold calculator — enter the weight and karat of an old ring, chain, or broken piece and it shows the melt value, the floor price for any offer. A dealer buying scrap usually pays 70% to 90% of melt value, because they need a margin and may charge a refining fee. A dealer selling you gold charges more than the spot value — the premium — which covers minting, distribution, and their own margin, and which runs higher on small coins than on large bars.

Worked example

Find the value of 10 grams of 22K gold at the default spot price of $4,150 per troy ounce, as of November 7, 2026.

Step 1: Convert the weight to troy ounces. One gram is 0.0321507 troy ounces, so 10 grams is 10 × 0.0321507 = 0.321507 troy ounces.
Step 2: Work out the pure gold. 22K gold is 91.67% pure, so the pure gold content is 0.321507 × 0.9167 = 0.294726 troy ounces.
Step 3: Multiply the pure gold by the spot price — 0.294726 × $4,150 = $1,223.11.
Step 4: The value is $1,223.11. In scrap value mode the same number is the melt value, and a dealer would typically offer 70% to 90% of it, roughly $856 to $1,101.

Enter the same numbers — 10 grams, 22K, $4,150 spot price — and the calculator shows exactly the same result: $1,223.11. For comparison, 10 grams of pure 24K gold at the same price is worth $1,334.25, and 10 grams of 14K gold is worth $778.27. The price-per-unit table updates with the karat, so you can also see that one gram of 24K gold is worth $133.43 and one tola of 24K gold is worth $1,556.25 at this spot price.

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