Odds to Probability Text Changer

Click this extension to convert all American odds on a webpage to implied probability.
What is Odds to Probability Text Changer?
Odds to Probability Text Changer is a Chrome extension that converts American odds on a webpage to implied probability. It calculates the percentage chance that a bet is supposed to win and displays it as a percentage.

Extension stats

Users: 78 ▼ -1
Rating: 5.00 (1)
Version: 3.3 (Last updated: 2022-12-17)
Creation date: 2021-10-26
Risk impact: Low risk impact
Risk likelihood: Very low risk likelihood
Manifest version: 3
Permissions:
  • storage
Size: 75.30K

Other platforms

Not available on Firefox
Not available on Edge
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Extension summary

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

Extension safety

Risk impact

Odds to Probability Text Changer requires very minimum permissions.

Risk likelihood

Odds to Probability Text Changer has earned a good reputation and can be trusted.

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