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Convert between American and Decimal odds instantly
Enter positive (+) or negative (-) odds
Australian/European format
For positive American odds (+200), divide by 100 and add 1. For negative odds (-200), divide 100 by the absolute value and add 1. Our calculator does this instantly.
Implied probability converts betting odds into a percentage showing the bookmaker's estimated chance of an outcome occurring, including their margin.
American odds show profit relative to $100 (+ for underdogs, - for favorites). Decimal odds show total return per $1 bet including your stake.
Different sportsbooks use different formats. Converting odds helps you compare value across books and understand the true probability and potential returns.