Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
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.
Fill in the required fields to see your result.
Betting Odds
Expected Value Betting Calculator
Calculate the expected monetary value of a bet — and across a series of identical bets — based on your true probability estimate versus the bookmaker's odds. Use it to identify which bets are genuinely profitable long-term.
Fill in the required fields to see your result.
Key differences
| Kelly Criterion Betting Calculator | Expected Value Betting Calculator | |
|---|---|---|
| Category | Betting Odds | Betting Odds |
| Inputs required | 4 | 5 |
| Result | Optimal Bet Size ($) | Expected Value ($) |
| What it does | 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. | Calculate the expected monetary value of a bet — and across a series of identical bets — based on your true probability estimate versus the bookmaker's odds. Use it to identify which bets are genuinely profitable long-term. |