Money
Gold Calculator
Enter the weight, choose a karat purity (or custom percent), and enter today's spot price per troy ounce or per gram. The calculator returns the pure-gold weight and the melt value.
Weight
Unit
Purity
Spot price
Unit
Enter the spot price yourself. The calculator does not fetch live market data.
Disclaimer
Melt value is the pure-gold content of an item multiplied by the spot price. It does not reflect what a buyer (pawn shop, jeweler, refiner, coin dealer) would actually pay. Buyers typically pay well below spot for scrap, and well above spot for collectibles, numismatic coins, or branded jewelry.
Educational calculation. Not financial, investment, or appraisal advice. No live market data.
Melt value
$431.36
Pure gold content: 5.8333 g at 58.33% purity.
Karat purity scales between 24K (100% pure) and 0K (0% pure). 14K is 14/24 ≈ 58.33% gold; 18K is 75%; 22K is ~91.67%. The remaining percentage is alloyed with other metals.
Examples
10 g of 14K gold at $2,300/ozt
Pure 5.83 g; melt ≈ $431.40
1 ozt of 18K gold at $2,300/ozt
Pure 0.75 ozt; melt ≈ $1,725
5 dwt of 10K gold at $2,300/ozt
Pure 3.24 g; melt ≈ $240
1 kg of 24K bullion at $2,300/ozt
Pure 1,000 g; melt ≈ $73,950
How it works
Melt value depends only on the amount of pure gold in the item and the spot price of that pure gold. Purity scales the gross weight; spot price translates pure mass to dollars.
Pure weight · pure_g = total_g × (purity / 100)
Melt value · value = pure_g × price_per_g
price_per_g = spot per troy oz / 31.1034768.
Related money calculators
- Options profit calculator for the derivative side of trading.
- CAGR calculator for annualizing the long-term return on a gold holding.
- Inflation calculator for purchasing-power adjustments over time.
- Weight converter for converting weights without the price step.
- All money calculators.
Frequently asked questions
Weight times purity gives the pure-gold content. Pure-gold content times spot price gives the melt value. The calculator handles unit conversions for both weight and price (per troy ounce or per gram).
Karat is parts of pure gold out of 24. 24K = 100% pure; 18K = 75%; 14K ≈ 58.33%; 10K ≈ 41.67%. The remainder is alloyed with other metals (copper, silver, palladium) for hardness and color.
An avoirdupois ounce (oz) is about 28.35 g. A troy ounce (ozt) is about 31.10 g and is the standard for precious metals. Gold spot prices are quoted per troy ounce.
A pennyweight (dwt) is 1/20 of a troy ounce, about 1.555 g. It is still used in the jewelry trade in the US, especially for scrap and inventory.
By design. Live market data complicates accuracy, caching, and disclaimers. Enter the current spot price from a reliable source (a major financial news site, your dealer, or kitco.com) and the calculator does the math.
No. Buyers pay well below spot for scrap (often 40 to 80% of melt). Branded jewelry and collectible coins can sell above melt. This calculator returns melt value (the metal-only baseline), not retail or buyback price.
Related calculators
Money
Tip Calculator
Split a bill, calculate a fair tip, and round amounts cleanly across any number of people.
Money
Sales Tax Calculator
Add or remove sales tax from any amount with a precise breakdown of subtotal, tax, and total.
Money
Dividend Calculator
Estimate annual, quarterly, and monthly dividend income from share price, holding size, and dividend yield.