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Betting Odds Calculator

Convert between decimal, fractional, American odds, and implied probability — parlay calculator, probability gauge, vig/overround analysis.

Input format

Decimal odds (e.g. 2.50)

Converted Odds

Decimal—

Fractional—

American—

Implied probability—

Profit per $100—

Decimal: total return per $1 stake. Fractional: profit/stake.
American +: profit per $100. American −: stake to profit $100.