How the gold price is derived
We start from the international spot gold price in USD per troy ounce and convert:
- Price per gram of pure gold = spot ÷ 31.1035.
- Karat price = pure price × purity (e.g. 14K = ×0.585).
- Currency value = USD value × the live USD→currency exchange rate.
Both the gold price and the exchange rate carry their own timestamp, shown beneath the result.
Related
Frequently asked questions
How is the gold price per gram calculated?
We take the international spot price in USD per troy ounce, divide by 31.1035 to get the price per gram of pure gold, multiply by the karat purity, then convert to your currency with a live exchange rate.
Why does the price differ by karat?
Lower karats contain less pure gold. 24K is ~99.9% gold, 18K is 75%, 14K is 58.5%, so their per-gram values scale with purity.
Is the gold price live?
Yes — prices come from a metals provider and refresh every few minutes, with the gold and exchange-rate timestamps shown beneath the result.