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Calculator Answers

Gold Calculator

Blake Boege
Written by Blake Boege · Founder, Calculator Answers

A gold calculator is a financial evaluation tool used to determine the monetary value of gold items based on weight, purity, and the current market spot price. Users input the weight of their gold in grams, ounces, pennyweights, or other units, along with the purity rating expressed in karats or percentages. The calculator computes the pure gold content and multiplies it by the current gold price per unit of weight to find the raw scrap value. Jewelers, investors, and sellers use it to estimate the value of jewelry, coins, and bullion.

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.

Quick Answer

Calculate the scrap melt value of your gold. Enter the weight, select the karat purity, and input the current gold spot price.

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.

Gold value

Melt value

$431.36

Pure gold content: 5.8333 g at 58.33% purity.

Total weight10 g
Purity58.33%
Pure gold weight5.8333 g
Price per gram (pure)$73.95
Melt value$431.36
Value per gram of alloy$43.14
Value per troy ounce of alloy$1,341.67

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.

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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.

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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.