Odds Converter and Implied Probability Calculator
Implied Probability
45.45%
Compare this to the fair probability to find positive EV bets
Compare implied probability to fair odds for positive EV betting
This implied probability calculator allows you to convert betting odds into a percentage that reflects the likelihood of an outcome happening, according to the sportsbook's line. It helps you evaluate whether a bet offers value by comparing the implied probability to your own fair probability estimate or no-vig line. If the implied probability is lower than your projected probability, the bet may offer positive expected value and long-term profitability.
Tip: Use this tool alongside a no-vig odds calculator to find discrepancies and uncover potential value bets.
Frequently Asked Questions
Implied probability is the percentage chance of an outcome occurring based on the odds offered by a sportsbook. It reflects both the true odds and the sportsbook’s built-in margin (vig).
Implied probability is calculated by converting the betting odds into a percentage. For example, American odds of +120 equal an implied probability of 45.45%. Each odds format (American, Decimal, Fractional) has its own conversion formula.
Comparing implied probability to fair (no-vig) probability helps you identify bets with positive expected value. If the sportsbook’s implied probability is lower than your fair probability estimate, the bet may offer long-term value.
Yes, the implied probability calculated directly from odds includes the vig or margin that sportsbooks build into their lines. That’s why comparing to fair probability is important for sharp betting decisions.
Yes. Implied probability can be applied across all sports and markets. It works the same whether you’re betting on football, basketball, soccer, or any other event.