No-vig Fair Odds
No-Vig Fair Odds Calculator: The Real Odds Once the Juice Is Removed
No-vig fair odds are the odds on a market with the sportsbook's juice removed, the cleanest reading of what the market believes. The method: convert each side to an implied probability, divide each by the total to get the no-vig probability, then take the inverse. A market at -111 (1.90) and -118 (1.85) has fair odds of +103 (2.03) and -103 (1.97). The no-vig fair odds calculator handles two- and three-way markets and works as a benchmark for pricing and for line shopping.
No-Vig Fair Odds Calculator
No-vig Fair OddsStrip out the juice to see the fair odds on a game
Fair probability = (1 ÷ odds) ÷ Σ(1 ÷ odds of each side); fair odds = 1 ÷ fair probabilityHow to use the no-vig fair odds calculator
Enter every side of the market and the calculator returns each side's fair odds and true probability. Fair odds are always longer than the posted odds because the juice has been removed; the gap between the two is what the market costs you.
The most common use is as a benchmark. Compare the market's fair probability with your own estimate: if you rate a side higher than its fair probability, you are more confident than the market and the side has value. This is more accurate than comparing against the posted price, because the juice makes both sides look more expensive than they are.
The second use is line shopping. Take the fair odds from the sharpest or lowest-juice book as the true price, then look for another legal sportsbook posting a longer price on the same side. With multiple books in most states, a side priced above the no-vig line at one book is the closest thing to a free lunch in US sports betting.
Fair odds are not the true probability
Proportional devigging (dividing each side by the total) is the most common method, but it assumes the sportsbook spreads the juice evenly across sides. In practice the underdog usually carries a little more juice, so proportional devigging slightly overstates the underdog's true probability.
For spreads and totals in the major leagues the two sides are priced close together and the error is small. For lopsided moneylines, say -500 (1.20) against +350 (4.50), treat the fair odds as a guide rather than an exact value.
Example: -111 (1.90) against -118 (1.85)
- Implied probabilities 52.63% and 54.05%; total 106.68%.
- Fair probability: 52.63 ÷ 106.68 = 49.3%; 54.05 ÷ 106.68 = 50.7%.
- Fair odds: 1 ÷ 0.493 = 2.03 (+103); 1 ÷ 0.507 = 1.97 (-103).
The market actually rates the two sides as near a coin flip; the 1.90 you pay versus the fair 2.03 is the 6.7% of juice. If you rate side A at 55%, its fair odds would be -122 (1.82); the market offers -111 (1.90), so that side has value.
FAQ
What are no-vig fair odds?+
They are the odds on a market after the sportsbook's juice is removed, showing the market's clean estimate of each outcome. A market at -111 (1.90) and -118 (1.85) has fair odds of about +103 (2.03) and -103 (1.97).
How do you calculate no-vig odds?+
Convert each side to an implied probability (1 ÷ decimal odds), divide each by the sum of all sides to get the fair probability, then take 1 ÷ fair probability for the fair odds. The same steps work on a three-way market.
Are fair odds the same as no-juice odds or true odds?+
Yes. No-vig odds, no-juice odds, devigged odds and fair odds all refer to the same thing: the price with the sportsbook's margin stripped out. 'True odds' is used loosely for the same figure, though it is still only the market's estimate.
Can I bet at the fair odds?+
No. Sportsbooks only post odds that include juice. Fair odds are a benchmark for judging whether the price you are offered has value, and for spotting a book whose price on one side is longer than the no-vig line at another.
Why are the fair odds on underdogs slightly off?+
Proportional devigging assumes the juice is spread evenly across sides, but sportsbooks usually load a little more onto the underdog, so the underdog's fair odds come out slightly short. On evenly priced two-way markets the error is small.
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For informational purposes only. Sports betting is legal in 39 states and D.C.; rules and minimum age vary by state. 21+. Gambling problem? Call 1-800-GAMBLER.
Odds and vig conventions follow standard US sportsbook pricing (-110 on spreads and totals). The tax line is based on IRS Topic 419 and the Form W-2G instructions (rev. 01/2026); it is not tax advice.