Odds Converter
Convert between decimal, fractional and American odds and see the probability the price implies. Then check how much margin a bookmaker builds into a match result market, and what the fair odds would be without it.
Convert odds
Bookmaker margin (1X2)
Enter the decimal odds for home, draw and away to see the bookmaker's margin and the fair odds without it.
How it works
Implied probability is 1 divided by the decimal odds: odds of 2.50 imply a 40% chance. Fractional odds 6/4 are the profit per unit staked, so they equal decimal 2.50; American +150 means a 100 stake wins 150, also 2.50.
Bookmaker margin: add up the implied probabilities of every outcome. Anything above 100% is the bookmaker's margin. Dividing it back out gives the fair odds, the price at which a bet would break even in the long run.
A bet has value when your own estimate of the probability is higher than the fair implied probability. See our value bets for matches where our model and the bookmaker disagree.