Win Probability Formula:
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Win probability derived from moneyline odds represents the implied probability of a team winning based on the betting odds. It's a conversion from the sportsbook's odds to a percentage chance.
The calculator uses the following formulas:
Where:
Explanation: Positive odds represent underdogs where you win more than you bet, while negative odds represent favorites where you need to bet more to win a smaller amount.
Details: Understanding implied probabilities helps bettors assess whether the sportsbook's odds represent value compared to their own probability estimates.
Tips: Enter the moneyline odds as a positive or negative number (e.g., +150 or -200). The calculator will compute the implied win probability percentage.
Q1: What's the difference between positive and negative moneyline odds?
A: Positive odds show how much you'd win on a $100 bet, while negative odds show how much you need to bet to win $100.
Q2: How accurate are these implied probabilities?
A: They represent the sportsbook's assessment including their margin (vig). Actual probabilities may differ slightly.
Q3: Why do probabilities from moneyline odds add up to more than 100%?
A: The excess (overround) represents the sportsbook's profit margin built into the odds.
Q4: Can I use this for other sports besides NFL?
A: Yes, the moneyline to probability conversion works the same for any sport.
Q5: How do I find value bets using win probability?
A: Compare your estimated probability to the implied probability - if yours is higher, it might be a value bet.