Trading tools
Position Size Calculator
How many lots to trade so a stop loss costs exactly the risk you choose.
Position size
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- Amount at risk
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- Pip value per standard lot
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- Mini lots (0.1)
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- Micro lots (0.01)
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How the position size formula works
Position size connects three things: how much you're willing to lose, where your stop loss is, and what each pip is worth.
Formula
Lots = (account × risk %) ÷ (stop loss in pips × pip value per lot)
Your stop comes from the chart; the lot size adjusts to fit it. Learn the full method in Position Sizing.