0.03 lots
The lot size that risks exactly the amount you choose, based on your stop-loss.
XAUUSD model: a price move of 1.00 equals 10 pips, and 1 pip is worth $10 on a 1.00 lot ($1 on 0.01 lot). Check your broker's contract specification, as it can differ.
Risk & position-size calculator: how it works?
On gold (XAUUSD), a price move of 1.00 is 10 pips, and each pip is worth $10 on a standard 1.00 lot. That gives three simple formulas.
Lot size = risk amount ÷ (stop-loss in pips × 10). For example, risking $15 with a 50-pip stop-loss gives 15 ÷ 500 = 0.03 lots.
Profit = target in pips × 10 × lot size. A 100-pip target on 0.03 lots gives 100 × 10 × 0.03 = $30.
Advance lets you type the entry and exit prices instead. Entry 4045.38 and exit 4046.38 is a difference of 1.00, which is 10 pips. The calculator turns that into pips and then into profit or loss for a buy or a sell.
Deciding the amount you will risk before every trade, and sizing the lot from your stop-loss, keeps a losing streak from damaging the account quickly.
These are educational calculations on a simple model. They don’t include spreads, commissions, or swap fees, and brokers’ contract sizes can differ. Always check the numbers in your own trading platform before you place a trade. This is explanation, not trading advice.