Kelly Calculator (For Bet)

Odds (Decimal) ? (Includes initial investment)

Win Probability (%) ? Your estimated probability of winning

Simulation Settings

Initial Fund ? Your initial amount

Repeat Count ? Number of times to repeat the bet

Simulation Repeats ? Number of simulation runs to perform

Betting Type ?

Reinvest (Reinvest Profits) Fixed Amount (Fixed Betting Amount)

Results

0.0%

Successful Simulations	0
Failed Simulations	0
Average Final Fund	0
Average Profit Rate	0.0%
Success Probability	0.0%

What is the Kelly Criterion?

The Kelly Criterion is a mathematical formula that helps determine the optimal bet size in gambling and investment scenarios to maximize long-term growth of capital.

Formula:

f* = (bp - q) / b

f*: Optimal fraction of capital to bet
b: Net odds received on the bet (e.g., 2.00 odds = 1.00)
p: Probability of winning
q: Probability of losing (1 - p)

Key Benefits:

Maximizes long-term capital growth
Prevents bankruptcy by controlling bet size
Accounts for both odds and probability

Important Notes:

Only bet when there is a positive edge (f* > 0)
Never bet more than the calculated fraction
Results are based on statistical probability