What this calculator tells you
Spot gold is quoted per troy ounce, but most jewelry and small lots are weighed in grams. This page turns the spot price into clear per-gram values by karat.
Gold Price Per Gram Calculator formula
Gold price per gram = gold spot price / 31.1034768 x purity.
When to use it
- Look up the per-gram value for common karats.
- Calculate a single gram or scale up to any item weight.
- Compare pure bullion pricing against jewelry karat value.
What to check before relying on the number
- Retail jewelry prices include labor, design, brand, and retail margin.
- A gram scale should be accurate to at least 0.1g for small pieces.
- Spot price can move while markets are open.
Common questions
How do you calculate gold melt value?
Convert the item weight to troy ounces, multiply by the gold purity, then multiply by the current gold spot price. For example, 10 grams of 14K gold is 10 / 31.1034768 x 0.5833 x spot price.
Is melt value the same as what a dealer pays?
No. Melt value is the metal content value before dealer spread, refining fees, assay risk, shipping, and business margin. The payout field lets you estimate offers below full melt value.
Why does the calculator use troy ounces?
Precious metals trade in troy ounces, not regular household ounces. One troy ounce equals 31.1034768 grams.
Can I change the spot price?
Yes. Live prices are fetched when available, and the spot price box remains editable so you can model a dealer quote, a delayed price, or your own market assumption.