24K Gold Calculator

24K is pure gold

24K gold is approximately 99.9% pure — as pure as commercially traded gold gets. You will rarely encounter 24K in Western jewelry, because pure gold is too soft for daily wear. Where you do find it is bullion: cast and minted bars, sovereign coins like the Canadian Maple Leaf and American Buffalo, and East Asian jewelry sold explicitly as fine gold. This page prices pure gold by weight at the live spot rate; for a jewelry box that spans several karats, the full scrap gold calculator handles every purity from 10K up.

How 24K gold value tracks the spot price

For 24K, the calculation barely needs a purity adjustment: at 99.9% fine, a gram of your bar is worth essentially the pure-gold gram price — the current spot price divided by 31.1035. A one-troy-ounce bar has a melt value equal to the spot price itself. This calculator treats 24K as 100% pure, which matches how dealers quote bullion: a bar's melt value is simply its weight times the pure-gold price.

Common gold bar sizes, from 1 gram to 1 ounce

Retail gold bullion comes in a handful of standard shapes. Minted bars — struck like coins and sealed in tamper-evident assay cards — dominate the small sizes: 1 gram, 5 grams, 10 grams, and 1 troy ounce are the formats you will meet at almost every dealer counter. Cast bars, poured into a mold and stamped afterward, are more common at heavier weights and carry a rougher, matte finish. Sovereign bullion coins such as the Maple Leaf and the Buffalo each contain one troy ounce of fine gold, which makes their melt value the easiest of all to check: it is the spot price itself.

Size changes the economics of selling gold more than most owners expect. The gold in a 1-gram bar is worth exactly one-tenth of the gold in a 10-gram bar, but the buyer's handling effort is the same for both, so tiny bars tend to be quoted slightly weaker per gram. If your bar is stamped in troy ounces rather than grams, the gold calculator in ounces works in that unit natively and keeps the troy-versus-kitchen-ounce distinction straight.

Reading bullion stamps on gold bars and coins

Bars and coins are stamped "999" or "999.9" (often written "9999") rather than "24K". The four-nines mark means 99.99% purity, standard for modern minted bars from Swiss and Australian refiners. Reputable bars also carry the refiner's name, a weight statement, and usually a serial number — details that make them easier to sell and harder to fake.

999 vs. 9999 vs. 24K: what the fineness marks mean

Three nines, four nines, and 24K describe the same metal to different decimal places. A 999 stamp certifies 99.9% gold — the traditional bullion threshold. A 9999 stamp certifies 99.99%, the modern minted-bar standard. The gap between the two marks is one part in a thousand: real on a refiner's balance sheet, but only a few dollars on a single ounce of gold, so for a seller the marks are effectively equal in value.

"24K" itself appears mostly on East Asian fine gold jewelry — chains and bracelets sold by gold weight rather than by design. Such pieces carry the value of pure gold but often sell through jewelry channels, where quotes can come in below true bullion rates; knowing your melt value first closes that gap. Check the stamp before assuming purity, though: wedding gold from South Asia is usually marked 916 rather than 999, and the 22k gold calculator prices that alloy at its correct 91.7%.

Step-by-step: valuing a 10-gram gold bar

Take a spot price of $4,000 per troy ounce for illustration. One gram of pure gold is then $4,000 ÷ 31.1035 = $128.60, so a 10-gram 999 bar melts at about $1,286. The four payout tiers frame every offer you will hear for that bar: a pawn shop at 55–70% of melt would pay roughly $707–$900, a local jeweler at 70–85% about $900–$1,093, an online gold buyer at 80–95% around $1,029–$1,222, and a bullion dealer or refiner at 95–98% between $1,222 and $1,260.

The spread is the entire lesson: the same gold bar earns $707 at the worst counter and $1,260 at the best — over $550 of difference on one small item, purely from choosing the buyer. The calculator above repeats this math at the live spot price for your exact weight, so run your own gold through it before anyone else puts a number on it.

Where to sell 24K gold for the best payout

Bullion earns the strongest payouts in the scrap ecosystem. Recognizable bars and coins sell to bullion dealers and refiners at 95–98% of melt value, because they need no assay drama and resell instantly. A pawn shop, by contrast, may still quote bullion at jewelry-scrap rates — a costly place to sell a bar. If your bar lacks paperwork or comes from an obscure mint, expect the buyer to test it, but the gold itself loses no value.

Whatever the venue, know your number first: enter the exact weight above and compare every offer against the melt value shown. For fractional bars and coins — half-ounce, quarter-ounce, gram sizes — expect the percentage to dip slightly, since the dealer's fixed handling cost weighs heavier on a small item. Selling several small pieces together usually recovers most of that gap.

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