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Enter the odds and your estimated win probability to see if a bet has positive expected value.
Expected value is the average amount you'd win or lose per bet if you placed the same bet many times. Positive EV (+EV) means you expect to profit long-term. It's calculated as: EV = (win probability × net odds) − (loss probability).
A positive EV bet is one where your estimated probability of winning is higher than the implied probability from the odds. For example, if you believe a team has a 55% chance of winning but the odds imply only 47.6% (decimal 2.10), that's a +EV bet with an edge of 7.4%.
You can use AI prediction models (like those on SignalOdds), statistical analysis, Elo ratings, or Poisson models. The key is having a probability estimate that's independent of the bookmaker's odds — otherwise you're just comparing the odds to themselves.
Yes, consistently betting on +EV opportunities is the mathematically proven path to long-term profit. However, variance means you'll still have losing streaks. Combining +EV selection with proper bankroll management (like the Kelly criterion) maximizes growth while controlling risk.