Calculators
Calculate your potential profit and risk with our calculators.
Implied Probability Calculator
Implied probability includes sportsbook margin (vig.)
Bet Amount
Fraction
Decimal
American
Probability %
To Win
$0.00
Payout
$0.00
How to Use the Implied Probability to Fair Odds
The Implied Probability Calculator converts betting odds into their corresponding win probability.
Odds represent more than payouts — they imply the probability the sportsbook assigns to an outcome, including vig.
How It Works
Enter your bet amount and odds in any format (Fraction, Decimal, American, or Probability %).
Press Tab or Enter (or click away) to sync the other odds formats — values are not reformatted while you type.
The Calculator Outputs
Implied probability as a percentage
To Win and total Payout based on your bet amount
This tool is useful for comparing sportsbook pricing, estimating market expectations, and feeding probabilities into EV or Kelly calculations.