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 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.
Key differences
| Kelly Criterion Calculator | Kelly Criterion Bet Size Calculator | |
|---|---|---|
| Category | Betting Odds | Betting Odds |
| Inputs required | 4 | 4 |
| Result | Optimal Bet Size ($) | Optimal Bet Amount ($) |
| 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 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. |