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Expected Value (+EV) Calculator
Find out whether a bet has positive expected value at the offered odds.
Odds format
Enter valid odds and values to see the result.
Frequently asked questions
What is expected value in betting?
Expected value (EV) is the average amount you would win or lose per bet if you placed the same bet many times. EV = (win probability × profit) − (loss probability × stake).
What makes a bet +EV?
A bet is +EV when your estimated win probability is higher than the probability implied by the odds. That means the price is better than the fair odds.
Does a +EV bet always win?
No. A +EV bet can still lose. Positive expected value only matters over a large number of bets, and it depends on your probability estimate being accurate.
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