Free tool
No-vig fair odds calculator
Enter both sides of a market and the calculator removes the vig, returning the fair odds and the true win probability for each side, the number you actually have to beat.
No-vig fair odds
e.g. -110, +120
the other side
How much margin the book is charging
True win probability 50.0%
True win probability 50.0%
The fair odds are the de-juiced price you'd need to beat to be a long-term winner.
What removing the vig tells you
Sportsbooks pad both sides of a market so the implied probabilities add to more than 100%. The no-vig calculator normalizes them back to 100%, giving the book's honest estimate of each side's win chance, the fair line you'd need to be a break-even bettor.
How sharp bettors use it
The no-vig price of a sharp book (like the market favorite of the moment) is one of the best public estimates of true probability. Compare it against the price at a softer book: if the soft book is paying more than the sharp no-vig line, that gap is your edge.
Frequently asked
What does removing the vig mean?
The vig (or juice) is the sportsbook's built-in margin. On a -110/-110 market the two implied probabilities sum to about 104.8%; the extra 4.8% is the house edge. Removing the vig scales both probabilities so they sum to exactly 100%, revealing the book's true estimate of each outcome.
Why is the no-vig line useful?
It's the fairest public estimate of true probability. If you can bet a side at better odds than its no-vig fair price somewhere else, you have positive expected value, and that comparison is the foundation of sharp betting.
More tools
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