Unit Calculator
Calculate optimal unit size for bankroll management and risk control
Updated just now
Unit Size Calculator
Results
Conservative
1-2%Risk per bet
Moderate
3-5%Risk per bet
Aggressive
5%+Risk per bet
Bankroll Protection Strategies
Conservative (for longevity)
Risk 1-2% per bet with 10+ simultaneous bets. Protects against variance and downswings. Ideal for long-term sustainable growth.
Moderate (balanced)
Risk 3-5% per bet with 5-7 simultaneous bets. Balances growth and safety. Suitable for experienced bettors with proven systems.
Aggressive (high risk)
Risk 5%+ per bet with fewer simultaneous bets. Increases volatility and risk of significant losses. Only for confident bettors.
Kelly Criterion
The Kelly Criterion is a mathematical formula for bet sizing to maximize long-term growth:
Where: f = fraction to bet, W = win probability, b = odds, L = loss probability
Practical tip: Use 25% of Kelly Criterion value for safer growth while still outperforming traditional fixed-percent methods.
Example Scenarios
Scenario 1: Conservative
Bankroll: £10,000 | Risk: 2% | 5 simultaneous bets
Unit Size: £400 per bet | Safe: £9,000
Scenario 2: Moderate
Bankroll: £10,000 | Risk: 5% | 5 simultaneous bets
Unit Size: £1,000 per bet | Safe: £7,500
Scenario 3: Aggressive
Bankroll: £10,000 | Risk: 10% | 3 simultaneous bets
Unit Size: £3,333 per bet | Safe: £0
Bankroll Management Best Practices
- Never risk more than 5% of total bankroll on a single bet
- Maintain strict unit discipline—don't chase losses
- Adjust units only after reaching new bankroll milestones
- Track all bets to monitor actual vs. expected ROI
- Set loss limits and stop betting when reached
- Separate betting bankroll from personal finances
- Review and adjust unit size monthly or quarterly