Position Size Calculator
Position size is how many lots you trade. Getting it right means a losing trade costs only the amount you planned to risk, no more. Traders use this calculator before every trade to turn "I'll risk 1%" into an exact lot size.
How to use: enter your account currency and balance, choose how much to risk (as a % or a fixed amount), type your stop loss in pips and pick the pair. The lot size updates instantly.
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Convention: 1 pip = 0.0001 (0.01 for JPY pairs); 1 standard lot = 100,000 units. Gold (XAUUSD): 1 pip = $0.10 price move, 1 standard lot = 100 oz, so 1 pip = $10 per lot. Round the lot size down to what your broker allows.
Educational only, not financial advice. These tools are for learning and planning. Results are estimates: your broker's contract sizes, rates and fees may differ, so always check on your own platform before placing a trade.