Risk of Ruin Calculator

What is the probability your trading account hits zero? Uses Balsara's risk of ruin formula — input your win rate, average R:R, and risk per trade.

Strategy Parameters

Win Rate %

Avg Win (R multiple)

Avg Loss (R multiple)

Risk % per Trade

Ruin = Drawdown of

Results

Expectancy / Trade—

Profit Factor—

Kelly Fraction—

Consecutive Losses to Ruin—

Risk of Ruin—

Safety—

Risk of Ruin uses the simplified Balsara-derived formula: RoR ≈ ((1−edge)/(1+edge))^(capital/unit_risk). A RoR < 2% is generally considered acceptably safe.

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