Convert between American, Decimal, Fractional, and Implied Probability odds formats.
Implied Probability = 1 / decimal odds
American (positive) = (decimal - 1) × 100
American (negative) = -100 / (decimal - 1)
American odds of -110 convert to about 1.91 decimal and 52.38% implied probability before sportsbook margin is removed.
Use the result as a decision aid and keep the assumptions visible.
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