Betting Odds Calculator

Betting odds say the same thing in three different notations, and this tool moves between them. Enter American, decimal or fractional odds along with a stake to see the total return, the profit on top of the stake and the probability those odds imply. The same wager is then shown in all three formats, which makes prices easy to compare between books. Implied probability includes the bookmaker's margin, so it always reads higher than a fair estimate of the real chance.