Losing Streak Calculator

Losing streaks are not a possibility — they are a mathematical promise. Enter your win rate and this tells you the streak you should plan for, and what it will cost at your position size.

Exact probabilities (not an approximation): the chance of at least one run of that many consecutive losses somewhere in your run of trades, assuming each trade is independent. If seeing the near-certain number at your risk size makes you flinch, the answer is a smaller size — not a better streak. The full lesson: losing streaks are a promise. See also the drawdown recovery calculator.