Kelly Criterion Calculator
Kelly Criterion
Recommended Stake
$100.00
10.00% of Bankroll
Optimize Growth with the Kelly Criterion
The mathematical formula used by Warren Buffett and pro gamblers to determine the perfect bet size.
Why Use It?
Kelly eliminates the guesswork. If you bet too little, your bankroll grows too slowly. If you bet too much, you risk ruin. Kelly finds the exact sweet spot for exponential growth.
Fractional Kelly
Full Kelly can be volatile. Most professionals use Half Kelly (0.5) or Quarter Kelly (0.25). This reduces variance while still offering great growth potential.
🚀 Automate Your Profits
Finding value manually is nearly impossible. Pros use scanners.
How It Works
The formula considers your edge and the odds to tell you exactly how much to wager.
f* = (bp - q) / b
f* = Fraction of bankroll to bet
b = Decimal odds - 1
p = Probability of winning
q = Probability of losing (1 - p)
f* = Fraction of bankroll to bet
b = Decimal odds - 1
p = Probability of winning
q = Probability of losing (1 - p)