Formula
Approximate: RoR ≈ exp(−2 × WR × BR / SD²), where WR is win rate in BB/100, BR is bankroll in BB, SD is standard deviation in BB/100.
Example
A 5 BB/100 NLHE winner with SD = 100 and a bankroll of 3,000 BB has RoR ≈ exp(−2 × 5 × 3,000 / 100²) = exp(−3) ≈ 5%. Doubling the bankroll to 6,000 BB drops RoR to roughly 0.25% — a 20× improvement.
How StackEdge uses Risk of Ruin
StackEdge tracks Risk of Ruin automatically from your session log and surfaces it across the analytics dashboard, alongside related metrics — broken down by game type, venue, stakes, day of week, and time of day. See the full analytics suite →
Related terms
- Bankroll — The total amount of money set aside specifically for playing poker.
- Variance — The statistical spread of your poker results around your expected win rate.
- Win Rate — Long-term profit rate, in BB/100 for cash or ROI for tournaments.
- Sample Size — Number of hands or tournaments — determines how reliable your win rate is.
