Compare calculators
Both calculators run independently β change the inputs on either side to compare results.
Betting Odds
Expected Value Calculator
Calculates the expected monetary value of a bet over any number of repetitions, revealing its long-run profitability. Use it to decide whether a wager offers a genuine edge over the bookmaker's price.
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
| Expected Value Calculator | Kelly Criterion Calculator | |
|---|---|---|
| Category | Betting Odds | Betting Odds |
| Inputs required | 4 | 4 |
| Result | Expected Value ($) | Optimal Bet Size ($) |
| What it does | Calculates the expected monetary value of a bet over any number of repetitions, revealing its long-run profitability. Use it to decide whether a wager offers a genuine edge over the bookmaker's price. | 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. |