Risk of Ruin Calculator

Calculate the probability of losing your entire trading account based on your win rate, average win/loss, and risk per trade. Essential for understanding if your strategy is sustainable.

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Enter your trading statistics, then click Calculate risk of ruin to see the probability of account ruin.

Risk of Ruin Formula

RoR = ((1 - Edge) / (1 + Edge)) ^ Units

Where Edge = (WinRate × R:R) - LossRate, and Units = Account / Risk