Data methodology

Spot prices for gold (XAU), silver (XAG), platinum (XPT) and palladium (XPD) and foreign exchange rates are supplied by the MetalFlow API, which aggregates over-the-counter market feeds. Spot is quoted in US dollars per troy ounce, the international convention used by the LBMA and COMEX. We do not create, model or estimate prices ourselves.

Live prices refresh at least once per minute during market hours, and responses are cached for 60 seconds to keep pages fast. Intraday history covers up to 31 days; daily history goes back over the full series available from our provider. Precious metals trade roughly 23 hours a day, Sunday evening to Friday evening (New York time); over the weekend you will see the last traded price.

All weights are converted from the troy ounce using fixed factors: 1 troy ounce = 31.1034768 grams, 1 kilogram = 32.1507 troy ounces, 1 tola = 11.6638 grams, 1 baht = 15.244 grams. A troy ounce is not the same as a kitchen (avoirdupois) ounce of 28.3495 g — confusing the two overstates a price by about 10%.

Karat prices are the spot price multiplied by the metal's fractional purity: 24k = 0.999, 22k = 0.9167, 21k = 0.875, 18k = 0.750, 14k = 0.5833, 10k = 0.4167. Silver uses fineness: .999 fine, .958 Britannia, .925 sterling, .900 coin, .800 European. Coin melt values multiply the coin's actual fine-metal content (not gross weight) by the spot price.

Non-USD prices are USD spot multiplied by the live mid-market FX rate. Mid-market rates sit between the buy and sell rates you get from a bank or exchange, so your local cost will be slightly higher. When a rate is missing or invalid we display “—” instead of a misleading zero.

These are international spot references, not retail quotes. Dealer prices in your city include a premium (typically 2–8% for bullion, far more for jewellery), refining or making charges, and any local VAT, GST or import duty. Country and city pages describe those local factors, but the headline number is always spot-derived.

If a number looks wrong, tell us — include the page URL and the time you saw it. We investigate data issues and correct or annotate the page. Contact: hello@goldpricezone.com. See also our about page and the free price widget.