What Is XAUUSD? Gold Trading Explained in Plain Language

Where the symbol comes from

Currency codes follow the ISO 4217 standard: three letters, the first two identifying the country and the third the currency. Precious metals get an X in front because they belong to no country — XAU is gold, XAG is silver, XPT platinum, XPD palladium. Pair it with USD and you have the price of an ounce of gold in dollars.

Is XAUUSD forex, a commodity, or crypto?

It is a commodity, quoted like a currency pair, and traded on forex platforms — which is exactly why the question keeps coming up. Gold is a metal, not a currency, so it is a commodity. But it has an ISO currency code, it is quoted against the dollar, and your broker lists it in MetaTrader beside EUR/USD. It is definitely not crypto — there is a physical metal underneath it, refined and vaulted, and its price history runs for millennia rather than years.

Practically, the label that matters is the one your broker applies: gold usually has its own leverage, spread and margin rules, separate from currency pairs.

How much gold is one lot?

A standard lot of XAUUSD is 100 troy ounces. A troy ounce is 31.1035 grams, so one standard lot represents about 3,110 grams — a little over 3 kilograms of gold.

That is why lot size matters so much more on gold than on currency pairs. A mini lot (0.1) is 10 ounces, a micro lot (0.01) is a single ounce. When someone tells you they are "trading one lot of gold", they are talking about a position worth roughly three kilos of metal at market price. The pip arithmetic is here.

What you actually own

Through most retail brokers: nothing physical. You hold a contract for difference — an agreement to exchange the difference between the price when you opened and the price when you close. No vault, no delivery, no insurance on metal.

That is not a criticism, it is a definition, and it explains several things at once: why you can go short as easily as long, why you pay financing to hold overnight, and why the religious question about gold trading is more complicated than "gold is permissible". That question gets its own page.

Why people trade gold rather than currencies

Bigger daily ranges — gold routinely moves several times what a major currency pair moves, which means more opportunity and more risk from the same position size. A clear narrative — gold reacts to inflation, interest rates and crises in ways people find easier to reason about than an interest-rate differential. And it trades nearly around the clock on the same platforms as forex.

The catch is in the same sentence: bigger ranges cut both ways, and gold's spread and overnight financing are usually higher than a major pair's.