Compare calculators
Both calculators run independently β change the inputs on either side to compare results.
Betting Odds
Kelly Criterion Calculator
Calculates the mathematically optimal percentage of your bankroll to wager on a positive-EV bet using the Kelly Criterion, with optional fractional Kelly for reduced variance. Use it to maximize long-run growth while controlling ruin risk.
Betting Odds
Kelly Criterion Betting Calculator
Calculate the mathematically optimal fraction of your bankroll to wager on a bet using the Kelly Criterion. Ideal for bettors who want to maximize long-term bankroll growth while avoiding ruin.
Key differences
| Kelly Criterion Calculator | Kelly Criterion Betting Calculator | |
|---|---|---|
| Category | Betting Odds | Betting Odds |
| Inputs required | 4 | 4 |
| Result | Optimal Bet Size ($) | Optimal Bet Size ($) |
| What it does | Calculates the mathematically optimal percentage of your bankroll to wager on a positive-EV bet using the Kelly Criterion, with optional fractional Kelly for reduced variance. Use it to maximize long-run growth while controlling ruin risk. | Calculate the mathematically optimal fraction of your bankroll to wager on a bet using the Kelly Criterion. Ideal for bettors who want to maximize long-term bankroll growth while avoiding ruin. |