Expected Value Calculator
Calculate expected value and spot profitable bets fast.
About This Calculator
This Expected Value (EV) Calculator helps bettors determine the average expected return of a wager based on probability and odds. Enter your estimated win probability and betting odds to instantly see whether a bet has positive or negative value.
How to Use
- Enter your estimated probability of winning the bet (as a percentage)
- Enter the American odds (e.g., +150 or -110)
- View the expected value (+EV or -EV) instantly
What’s Next?
Use the Bet Payout Calculator to see the actual returns associated with positive expected value bets.
FAQ
What is an expected value (EV) calculator?
An expected value calculator helps you determine whether a bet is profitable in the long run based on your estimated probability and the odds.
What does EV mean in betting?
EV (expected value) represents the average amount you can expect to win or lose per bet over time.
What is a positive EV bet?
A positive EV (+EV) bet means the expected return is profitable in the long run based on your inputs.
What is a negative EV bet?
A negative EV (-EV) bet means the wager is expected to lose money over time based on your probability and odds.
How do you calculate expected value in sports betting?
Expected value (EV) is calculated by comparing a bet’s potential profit against the probability of winning and losing. A positive EV bet is one where the expected long-term return is greater than the amount risked. Sports bettors often use expected value to identify wagers with a mathematical edge over the sportsbook.
What is the difference between EV and odds?
Odds show payout potential, while EV factors in probability to determine whether the bet is actually worth placing.
Is this calculator accurate?
Yes. It uses standard EV formulas based on probability and odds to calculate the expected long-term return of a wager.
Why use an EV calculator?
It helps bettors identify value bets and avoid wagers that look good but are actually unprofitable long term.