How to use the no vig calculator
Enter American odds (ex: -110) for each team and view the corresponding no vig odds and implied win probability.
Calculating no vig odds allow you to see the true odds (and implied win percentage) assumed by the bookmaker.
Modeling your own implied win percentages and comparing to the bookmaker’s no vig odds will see how your analysis stacks up against the market.
For example, if you enter odds of -110 and -110, that would mean the no vig odds are flat (50% win probability for each side). You can use this information if you are modeling lines yourself by calculating an expected win probability. You could compare your projected win probability compares against the bookmakers implied probability and see if there is a significant difference.
Why are no vig odds useful?
No vig odds are very useful for modelers trying to predict win probability. By removing the vig from a sportsbook’s line, you can see what the real implied win probability is.
Calculating the no vig odds also gives you insight into how much vig a given sportsbook is charging. If you want to view the vig % directly, you can check out our vig calculator.
Another use case for no vig odds are when you are line shopping across multiple sportsbooks. Using the best odds on each side of a bet can give you an idea of the “market edge” that exists.