Bankroll Management Calculator
Manage your gambling bankroll like a professional with multiple proven strategies
Fixed Percentage Betting
Bet a fixed percentage of your current bankroll. Most common and simple strategy for bankroll management.
Results
Kelly Criterion
Mathematical formula to calculate optimal bet size based on your edge. Formula: f = (bp - q) / b
Results
This formula maximizes long-term growth rate while minimizing risk of ruin. Negative edge means no bet should be placed.
Unit-Based Betting
Define your unit size and bet in multiples based on confidence level. Commonly used in sports betting.
Results
Quick Reference
| Confidence | Units | Bet Amount |
|---|
Risk of Ruin Calculator
Calculate the probability of losing your entire bankroll given your edge and bet sizing.
Risk Analysis
- < 1%: Very Safe - Extremely low risk
- 1-5%: Safe - Acceptable risk for professionals
- 5-10%: Moderate - Higher variance, manageable
- > 10%: High Risk - Reduce bet size or improve edge
Session Management
Plan your gambling sessions with proper win goals and loss limits to protect your bankroll.
Session Plan
Session Management Tips
- Stick to your limits: Walk away when you hit win goal or loss limit
- Take breaks: Avoid playing multiple sessions back-to-back
- Track performance: Keep records of each session
- Stay disciplined: Never chase losses or exceed session bankroll
Bankroll Management Fundamentals
Why Bankroll Management Matters
Proper bankroll management is the difference between professional gamblers and those who go broke. Even with a positive edge, poor money management can lead to ruin through variance and bad luck streaks. By betting an appropriate percentage of your bankroll, you protect yourself from inevitable losing streaks while maximizing growth during winning periods.
Conservative vs Aggressive
Conservative (1-2%): Low risk, slow growth, can withstand long losing streaks. Ideal for beginners and those with limited bankrolls.
Moderate (3-5%): Balanced approach with moderate risk and growth. Suitable for experienced players with proven strategies.
Aggressive (5-10%): Higher risk, faster growth potential, but vulnerable to variance. Only for experienced players with strong edge and large bankrolls.
Common Mistakes to Avoid
- Betting too much: Risking more than 5-10% per bet leads to high risk of ruin
- Chasing losses: Increasing bet sizes after losses is a recipe for disaster
- Ignoring variance: Even winning strategies have losing streaks
- Poor record keeping: Track all bets to understand your true edge
- Playing without edge: No bankroll strategy can overcome negative EV games
Kelly Criterion Deep Dive
The Kelly Criterion is a mathematical formula: f = (bp - q) / b
Where:
• f = fraction of bankroll to bet
• b = odds received (decimal odds - 1)
• p = probability of winning
• q = probability of losing (1 - p)
Most pros use "fractional Kelly" (typically half) to reduce variance while still achieving strong growth. Full Kelly maximizes growth but can be too volatile for most bankrolls.