Compare calculators
Both calculators run independently β change the inputs on either side to compare results.
Betting Odds
Kelly Criterion Bet Size Calculator
Calculate the mathematically optimal stake size using the Kelly Criterion to maximize long-term bankroll growth. Use it whenever you have a genuine edge and want disciplined stake sizing.
Fill in the required fields to see your result.
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.
Fill in the required fields to see your result.
Key differences
| Kelly Criterion Bet Size Calculator | Kelly Criterion Calculator | |
|---|---|---|
| Category | Betting Odds | Betting Odds |
| Inputs required | 4 | 4 |
| Result | Optimal Bet Amount ($) | Optimal Bet Size ($) |
| What it does | Calculate the mathematically optimal stake size using the Kelly Criterion to maximize long-term bankroll growth. Use it whenever you have a genuine edge and want disciplined stake sizing. | 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. |