What Is the Scrap Gold Value Calculator?
This tool estimates how much money you can expect for scrap gold jewelry, coins or dental gold. It converts the international gold spot price (quoted per troy ounce) into a per-gram value, adjusts for the karat purity of your item, and applies the percentage a dealer actually pays. Gold pricing is universal, so this calculator works with any currency — just enter the spot price in the currency you want your answer in.
How to Use It
Weigh your gold in grams and enter the total weight. Choose the karat (stamped 10K, 14K, 18K, 22K or 24K). Enter the current gold spot price per troy ounce — you can find this on any live gold price site. Finally, enter the dealer's payout percentage; refiners and pawn shops typically pay 70–95% of melt value. The calculator returns your estimated payout, the full 100% melt value, the grams of pure gold, and the price per gram.
The Formula Explained
Gold purity is expressed in karats out of 24, so 18K is \(18/24 = 0.75\) pure. One troy ounce equals 31.1035 grams, so the price per gram is the spot price divided by 31.1035. Multiply weight × purity × price-per-gram for the full melt value, then multiply by the payout fraction.
$$ V = W \cdot \frac{K}{24} \cdot \frac{S}{31.1035} \cdot \frac{P}{100} $$Worked example: 10 g of 18K gold, spot $2,000/oz, 90% payout. Price per gram = $$ 2000 \div 31.1035 = \$64.30 $$ Pure value = $$ 10 \times 0.75 \times 64.30 = \$482.26 $$ After 90% payout = $434.04.
FAQ
Why don't I get the full spot price? Dealers pay a percentage to cover refining, testing and profit. Compare offers using the payout % field.
Does this include gemstones or clasps? No — weigh only the gold and subtract non-gold parts for accuracy.
What is a troy ounce? The standard unit for precious metals, equal to 31.1035 grams, slightly heavier than a regular ounce (28.35 g).
