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Odds and Probability Calculator

Chris Lollis
By: Chris Lollis | Last Updated: April 21, 2026

Convert betting odds between American, decimal, and fractional formats, then instantly see implied probability, projected profit, and total return.

American Odds
Decimal Odds
Fractional Odds
Implied Probability
Profit
Total Return

American odds must be +100 or greater, or -100 or lower. Decimal odds must be greater than 1. Fractional odds should be entered like 5/2 or 10/11.