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Odds Calculator

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Pro Tip

Always convert odds to implied probability before comparing. A "good" bet is one where the true probability exceeds the implied probability in the odds. This is called having "value."

Difficulty:Intermediate

Did you know?

Bookmakers build in a "vig" (vigorish) or "juice" — overround — into their odds, ensuring they profit regardless of outcome. A fair coin flip has 50%/50% probability, but a bookie might offer 52% implied probability on each side (104% total), keeping a 4% margin.

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Reviewed May 2026
Used 17K+ times
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