No-Vig Fair Odds Calculator
A no-vig calculator removes the sportsbook's built-in margin (vig or juice) from a two-way market to reveal the "true" or "fair" odds. These fair odds represent the sportsbook's actual assessment of each outcome's probability before they add their profit margin. Comparing fair odds to offered odds is the foundation of finding +EV bets.
Formula
Fair Probability = Implied Probability / Total Implied ProbabilityExample: -110/-110 market. Each side has 52.38% implied probability. Total = 104.76%. Fair probability = 52.38/104.76 = 50%. Fair odds = +100 (even). The 4.76% over 100% is the vig.
How to Use This Calculator
- Enter the odds for both sides of a two-way market
- The calculator removes the vig to show true/fair odds
- View the fair probability for each outcome
- Compare fair odds to odds at other sportsbooks to find value
When to Use This
- •Finding the true probability behind sportsbook odds
- •Devigging Pinnacle sharp lines to establish fair value
- •Identifying +EV bets by comparing fair odds to offered odds at other books
No-Vig Fair Odds Calculator
Remove the vig to see true fair odds and probabilities.
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For informational and educational purposes only. Not financial or gambling advice. All calculations assume odds remain constant and bets execute as entered. Actual results may vary. Gambling involves risk of loss.
Frequently Asked Questions
What is vig (or juice) in sports betting?
Vig (vigorish), also called juice, is the sportsbook's built-in commission. Standard vig is -110 on each side of a market, meaning you must risk $110 to win $100. The vig is how sportsbooks profit — they pay out less than the true odds would suggest.
Why is removing the vig important?
Removing the vig reveals the sportsbook's true probability estimate. By devigging sharp lines (like Pinnacle), you can find the "fair" odds. Any other sportsbook offering better odds than the fair line is potentially a +EV bet.
Related Glossary Terms
Vig (Vigorish)
The commission a sportsbook charges on a bet, built into the odds.
No-Vig Odds
The true fair odds after removing the sportsbook's built-in margin.
Juice
Another term for vigorish — the commission built into the odds by the sportsbook.
Implied Probability
The probability of an outcome as implied by the betting odds, including the bookmaker's margin.
True Odds
The actual mathematical probability of an outcome, without any bookmaker margin.
Hold Percentage
The percentage of total money wagered that the sportsbook or casino keeps as profit.