Free betting calculator
Implied Probability Calculator
Enter odds in American, decimal or fractional format to see the win probability the price implies, so you can compare it with your own estimate.
American odds, e.g. +150 or -110
Implied probability
52.38%
The win chance this price implies, vig included
- Decimal equivalent
- 1.909
- Implied chance to lose
- 47.62%
How it works
Every price is a probability in disguise. Implied probability is the share of the total payout your stake represents, which is the win rate you need just to break even at that price.
Sportsbook prices include their margin, so the implied probabilities of every outcome in a market add up to more than 100%. Use the no-vig calculator to strip it out.
American +X: p = 100 / (X + 100)
American −X: p = X / (X + 100)
Decimal D: p = 1 / D
Fraction a/b: p = 1 / (a/b + 1)
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