1. What is the Unit Size Calculator?

The Unit Size Calculator helps bettors determine the optimal bet size based on their bankroll, perceived edge, and the odds offered. This approach helps manage risk while maximizing long-term growth.

2. How Does the Calculator Work?

The calculator uses the following formula:

Where:

• \( Bankroll \) — Your total betting capital
• \( Edge \) — Your estimated advantage (as decimal, e.g., 0.05 for 5%)
• \( Odds \) — The decimal odds offered by the bookmaker

Explanation: The formula balances bet size according to your advantage while accounting for the risk implied by the odds.

3. Importance of Proper Unit Sizing

Details: Proper unit sizing is crucial for bankroll management, preventing over-betting on single wagers, and ensuring long-term sustainability in betting.

4. Using the Calculator

Tips: Enter your total bankroll, your estimated edge (as decimal), and the decimal odds offered. All values must be valid (bankroll > 0, 0 < edge ≤ 1, odds ≥ 1).

5. Frequently Asked Questions (FAQ)

Q1: What's a good edge to use in calculations?
A: Only bet when you believe you have a positive edge. Typical edges range from 0.01 (1%) to 0.10 (10%) for skilled bettors.

Q2: How often should I recalculate my unit size?
A: Recalculate whenever your bankroll changes significantly (≥20%) or when your edge estimate changes.

Q3: What if the calculator suggests a very small unit?
A: This may indicate either too small a bankroll for the odds/edge combination or that the bet isn't sufficiently advantageous.

Q4: Should I always bet the full unit size?
A: Many bettors use a fraction (e.g., 0.5-0.8) of the calculated unit to further reduce risk.

Q5: How does this compare to the Kelly Criterion?
A: This is a simplified version of Kelly that's more conservative and easier to implement for most bettors.