Fineness
24K is 999 fine: 99.9% pure gold. Some coins like the Canadian Maple Leaf are refined to 9999 (99.99%).
Gold spot price
$4,392.72 per troy ounce
$141.23 per gram of pure gold · $105.92 per gram of 18K
Figures show melt value — the market value of the recoverable gold content. They are not an offer, an appraisal, or investment advice. Buyers pay a percentage of melt that varies by business model.
24 karat · 99.9% pure
24K Gold Calculator
Estimate the value of pure gold — bullion bars, 999-fine coins, and 24K investment jewelry — using the live spot price and your choice of weight unit.
Input
Weight & purity
Max input: 999,999 per item.
Pure gold
0.0000 oz
Price / oz
$4,392.72
Price / gram
$141.23
Formula: weight in troy ounces × karat purity × gold price per ounce. Dealer offers may be lower than this market-value estimate.
Live market estimate
Current 24K gold value in USD
24K / 999 fine · spot-based melt estimate
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This is an international spot-based melt estimate, not an official local jewelry retail or buyback rate.
Calculated from XAU/USD spot and the selected currency exchange rate.
Open with these settingsCommon forms
Cast and minted bullion bars, Maple Leafs, Britannias, Pandas, and East Asian investment jewelry (Chuk Kam).
Value basis
24K tracks the spot price almost one-to-one, so it sells closest to the market price of any karat.
How to calculate 24K gold value
- 1Weigh the item, or use the stamped weight on a sealed bullion bar or coin.
- 2Select 24K purity in the calculator so the fine-gold ratio of 99.9% is applied.
- 3Pick your weight unit — bullion is usually troy ounces or grams, Asian jewelry often uses grams or baht.
- 4Compare the spot value against buyer premiums or payout percentages before selling.
To put this into practice, use Gold Karat Calculator, check the assumptions with Gold Price Per Gram, and compare the result in 10K vs 14K vs 18K vs 22K vs 24K Gold Value.
A worked 24K example
Say you have a 5 gram 24K bar and the spot price is $4,060 per troy ounce. 5 ÷ 31.1035 = 0.1608 troy ounces, × 0.999 purity = 0.1606 ounces of fine gold, × $4,060 = about $652. Recognized bullion bars usually sell at or slightly above melt value because buyers trust the stamp.
Why 24K jewelry is rare in the West
Pure gold is soft enough to scratch with a fingernail, so Western jewelers alloy it down to 18K or 14K for durability. In China, Hong Kong, and much of Southeast Asia, 24K "Chuk Kam" jewelry is normal and is priced by weight like bullion, with a small workmanship fee.
Selling 24K: what to expect
Because purity is not in question for sealed or hallmarked bullion, reputable dealers typically pay 95–99% of spot for recognized bars and coins — noticeably better than the 70–90% typical for jewelry that needs testing and refining. Unbranded or opened 24K items may still be tested before an offer.
Common questions
Is 24K gold really 100% pure?
Not quite. 24K is 999 fine (99.9% gold), the practical refining standard. Some mints go further: Canadian Maple Leafs are 9999 fine (99.99%).
Does 24K sell for the full spot price?
Recognized bullion often sells at 95–99% of spot, and popular coins can carry a premium above spot when demand is high. Unbranded 24K items are treated more like scrap.
Is a 24K gram always worth more than an 18K gram?
Yes — a 24K gram contains 99.9% fine gold versus 75% for 18K, so per gram it is always worth about a third more.
Open the calculator
Enter weight, purity, currency, and payout percentage in the main tool.