Risk of Ruin Calculator

Win Probability (%)

Average Win / Loss Ratio

Risk per Trade (% of capital)

Ruin Threshold (% of capital)

Total Trades (for reference)

Bankroll (₹)

Positive edge and prudent risk drastically reduce ruin probability. Use this to size trades or decide on fractional Kelly.

Edge

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Risk Fraction

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Ruin Threshold

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Risk of Ruin

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Survival Probability

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Trades (reference)

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Risk of Ruin vs Risk per Trade

Shows how ruin probability changes when sizing at different multiples of your chosen risk %.