Use the actual contract size from your broker’s symbol specification.
Risk AED = balance × risk percent. Raw lots = risk AED ÷ AED/USD ÷ (stop USD per ounce × ounces per lot). Rounded down to lot step; assumes minimum equals step. Excludes commission, spreads, gaps and slippage. A stop order does not guarantee maximum loss; margin needs a separate check.
For an AED 10,000 balance, a 1% budget, a USD 10 per ounce stop and a hypothetical 100 ounces per lot, rounding down to a 0.01-lot increment gives 0.02 lots. Modelled price movement is AED 73.45 at 3.6725 AED/USD. Replace the contract size with the actual symbol specification; fees, gaps and slippage are excluded.