Calculators
Calculate your potential profit and risk with our calculators.
Odds Expected Value Calculator
Wager
Odds
Win Probability
Summary
EV %0.00%
Expected Value$0.00
Enter valid American odds.
How to Use an Expected Value Calculator
The +EV Calculator helps determine whether a bet is mathematically profitable over the long run.
Sportsbooks embed a margin (vig) into their odds, which means the odds being offered may differ from the "true" probability of an outcome. The +EV calculator compares the odds you are being offered to a fair (no-vig) probability to estimate whether the bet has a positive or negative expected return.
How It Works
Enter the sportsbook odds for the bet.
Enter the fair odds or true probability (often derived from sharp markets or no-vig calculations).
Enter the stake amount (optional).
The Calculator Outputs
Expected Value (EV) as a percentage
Expected profit or loss per bet
A positive EV indicates a mathematically favorable wager over time, even though individual bets may still lose.