Gold lot size calculator
Gold is priced in dollars and sized in ounces, which is why a forex lot size calculator gets it wrong.
Stop distance is in dollars of gold price, so a stop at 2,395 on an entry at 2,400 is 5. One standard lot of XAUUSD is 100 ounces at most brokers; check yours.
Free, and nothing is stored. Check every figure against your own platform before you trade on it. Nothing here is advice, and trading carries risk.
The arithmetic is two lines. Loss per lot if stopped = stop distance in dollars × ounces per lot. Lot size = the amount you are prepared to lose ÷ loss per lot.
Worked through: a $10,000 account risking 1% is $100. A stop $5 away from the entry, on the standard 100 ounces per lot, loses $500 per lot. So the position is $100 ÷ $500 = 0.2 lots.
The currency is where most gold sizing goes wrong. Gold is priced in US dollars, so if your account is in pounds, a £100 risk is not a $100 risk. Pick your account currency above and enter the rate your platform shows, and the calculator converts the risk into dollars before sizing. It does not fetch a rate, because a stale one would give you a confident wrong answer.
The result is rounded down to the 0.01 lot step most brokers use. Rounding up would mean risking slightly more than you decided, so the calculator also shows what a stop actually costs at the rounded size.
One standard lot of XAUUSD is 100 troy ounces at most brokers, but not all. Some offer smaller contracts. The number is in your platform's symbol specification, and it is worth checking once rather than assuming.
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