Calculez la valeur exacte de votre or en grammes, DWT, onces troy et milligrammes.
See what scrap gold buyers actually pay per gram or weight unit after dealer spreads and refining fees
The melt value per gram is the pure metallic value. In real-world transactions, gold buyers, pawn shops, and refineries deduct operating margins and smelting fees. Adjust the slider below to model net cash payouts across various currency units.
Live scrap gold price per gram, per pennyweight (DWT), and per troy ounce — updated from the gold spot market
Convert effortlessly between weight units. Select a karat tier to update the price per gram, pennyweight (DWT), and troy ounce.
Three steps — zero your scale, choose your weight unit, calculate melt value
While international precious metal markets trade in grams, US jewelers and pawn shops frequently quote scrap in pennyweights (DWT). One pennyweight equals 1.55517 grams. 20 DWT equal 1 troy ounce.
Precious metals use troy ounces (ozt), which weigh 31.1035 grams. Standard avoirdupois ounces weigh only 28.3495 grams. Never use standard grocery scale conversions when evaluating scrap gold.
To determine pure gold weight: multiply gross weight by (Karat ÷ 24). For example, 10 grams of 14K gold contains 10 × 0.5833 = 5.833 grams of pure 24K gold.
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Understanding weight standards, purity fractions, and spot pricing
Precious metal valuation depends on two primary metrics: precise weight and purity percentage. This calculator unifies all standard precious metal weight units (Grams, DWT, Troy Oz, Grains, Milligrams) into exact 24K fine gold content.
Precious metal markets use distinct weight standards. The troy ounce (31.1035g) is universal for spot market trading. Grams are standard in metric countries. Pennyweights (DWT) remain popular among traditional US goldsmiths and pawnbrokers. Grains (1/480th of a troy oz) are used for micro-weights.
Always verify scale calibration using a certified test weight (e.g. 10g or 50g calibration weight). Scale errors grow proportionally with lot size — on a 100-gram scrap lot, a 2% scale drift alters valuation by over $120.
Remember to remove gemstones, watch glass, steel springs, or enamel coatings before weighing. If stones cannot be removed safely, jewelers use gemstone dimensional formulas to estimate and subtract non-metal weight.
Des outils adaptés à chaque type d'or — choisissez celui qui correspond à votre objet.
Pureté 41,7% · Alliage standard
Pureté 58,3% · Le plus populaire en bijouterie
Pureté 75,0% · Norme du luxe en France et Europe
Pureté 91,7% – 99,9% · Pièces et lingots
Grammes, DWT, Onces Troy et Milligrammes
Bagues, chaînes, bracelets et bijoux anciens
Napoléons, Souverains, Krugerrands et Maples
Ratios de couche d'or 1/20 GF & 1/10 GF
Cours du marché en temps réel et marges
Divide today's gold spot price per troy ounce by 31.1035 to get the 24K per-gram rate, then multiply by the karat fraction. At $3,235/oz spot: 24K = $104.01/g, 22K = $95.35/g, 18K = $78.01/g, 14K = $60.67/g, 10K = $43.34/g.
Scrap gold is measured in Grams (g), Pennyweight (DWT), Troy Ounces (ozt), Grains (gr), and Milligrams (mg). Grams are universal, while US jewelers and pawn shops often quote in pennyweights (1 DWT = 1.55517g).
There are exactly 31.1035 grams in 1 troy ounce (ozt), compared to 28.3495 grams in a standard avoirdupois (grocery) ounce. Troy ounces are ~10% heavier.
Multiply DWT by 1.55517 to get grams. To convert grams to DWT, divide by 1.55517. Exactly 20 DWT equal 1 troy ounce (31.1035g).
Yes! Always use a digital scale accurate to 0.01g. Kitchen scales rounding to whole grams can cause $60+ valuation mistakes per gram of 14K gold.
No, stones and non-metal elements must be removed or subtracted prior to weighing. Buyers pay strictly for net precious metal weight.
1 troy oz = 480 grains. Divide spot price by 480 × karat fraction. At $3,235/oz spot, 1 grain of pure 24K gold is worth approximately $6.74.
