Odds to Implied Probability
ID
nofjpbibnnkinmfndoknlbkchbecgbkbConvert American odds to implied probability, including live odds that change on the page.
Extension information
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Description
Convert American odds to implied probability, including live odds that change on the page.
This extension looks for American odds (such as "+140" or "-350") on the page, calculates the implied probability, and displays it as a percentage. For example, "+140" becomes "+140 (41.7%)"
Assuming the odds are "fair", the implied probability is the percentage chance that the bet is supposed to win.
Because sportsbooks charge a fee or "vig" for placing bets, this number will appear slightly higher than the actual probability.
This implied probability is simpler way to look at sports betting: a "good bet" is one where you believe the percentage chance is higher than the implied probability.
This project is open-source and available on Github: https://github.com/danielchines/odds-converter-extension