Betting Odds Converter
Convert betting odds between different formats (American, Decimal, Fractional) and calculate implied probability
About this calculator
The Betting Odds Converter is an essential tool for sports bettors that instantly converts odds between American (+/-), Decimal, and Fractional formats while calculating the implied probability of each bet. Different sportsbooks and regions use different odds formats, making this converter invaluable for comparing odds across platforms and understanding your potential returns. By showing implied probability, it helps bettors identify value bets and make more informed wagering decisions.
How to use
Enter your odds in any format (American like +150 or -200, Decimal like 2.50, or Fractional like 3/2) into the calculator. The tool will automatically convert your odds to all three formats and display the implied probability percentage, showing you the likelihood of that outcome occurring according to the bookmaker.
Frequently asked questions
What's the difference between American, Decimal, and Fractional odds?
American odds use +/- numbers, Decimal odds show total payout per dollar, and Fractional odds display profit as a fraction of your stake.
How is implied probability calculated from betting odds?
Implied probability is calculated by converting odds into a percentage that represents the bookmaker's assessment of an outcome's likelihood of occurring.
Why should I convert odds between different formats?
Converting odds helps compare betting opportunities across different sportsbooks and regions, ensuring you find the best value and understand potential returns clearly.