SpecialtyInstant Tool
No Vig Calculator
Calculate true fair odds, implied probability, and sportsbook juice
No Vig Fair Odds Estimator
Remove sports betting juice and calculate true fair implied probabilities
How No Vig Calculator Works
Fair Probability = Implied Probability / Total Implied Probability; Vig = Total Implied - 1 × 100Removes the bookmaker margin vigorish or juice from sports betting lines by normalizing the sum of implied probabilities back to 100 percent to calculate true fair market odds.
Example Calculation
Standard -110 on Both Sides Market
A bettor evaluates a standard point spread market with -110 odds on Team A and -110 odds on Team B.
- Implied probability for -110 equals 110 divided by 210 which equals 52.38 percent
- Total market implied probability equals 52.38 plus 52.38 which equals 104.76 percent
- Bookmaker vig equals 104.76 minus 100 which equals 4.76 percent juice
- Fair probability equals 52.38 divided by 1.0476 which equals 50.0 percent on both sides
- Fair American odds equals plus 100 even money on both sides
Result:Plus 100 Fair Odds on Both Sides with 4.8% Juice
Common Sportsbook Juice Margins and Fair Odds
| Listed Odds Both Sides | Total Implied Sum | Sportsbook Vig | True Fair Odds |
|---|---|---|---|
| -105 vs -105 | 102.4 percent | 2.4 percent vig | plus 100 even money |
| -110 vs -110 | 104.8 percent | 4.8 percent vig | plus 100 even money |
| -115 vs -105 | 104.7 percent | 4.7 percent vig | minus 104 vs plus 104 |
| -120 vs plus 100 | 104.5 percent | 4.5 percent vig | minus 109 vs plus 109 |
| -130 vs plus 110 | 104.1 percent | 4.1 percent vig | minus 118 vs plus 118 |
Frequently Asked Questions
What is vig in sports betting?
Vig also known as vigorish, juice, or cut is the commission fee built into betting odds by bookmakers to ensure long-term profitability regardless of outcome.
How do you calculate fair odds without vig?
Convert each American line into its raw implied probability. Divide each probability by the sum of both probabilities to obtain fair probability, then convert back to American odds.
What is a typical vig percentage in sports betting?
Standard point spread and total lines listed at -110 on both sides carry approximately 4.76 percent vig. Moneyline markets typically range between 3.5 and 7 percent.
Why is calculating no-vig odds useful?
No-vig odds show the true market implied probability of an event. Comparing true probability against other books lets sharp bettors identify positive expected value plus EV betting opportunities.
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