How to Use the No-Vig Calculator
A no vig fair odds calculator is used to back out "fair" odds from a market. This tool can be used to compare markets and odds, as well as find the true win percentages for a given team.
If you learn how to calculate fair odds with no vig, or juice, you'll know when your bets are mathematically profitable—when you have positive expected value compared to sharp bookmakers like Pinnacle.
The business of sportsbooks is to charge a "spread" on all wagers—the prices they offer are typically not "fair." This is referred to as the vig, juice, or house edge.
No-Vig Calculator Example
Let's say the moneyline odds for Liverpool vs Manchester City are 1.91 odds on both sides (Liverpool 1.91, City 1.91).
Imagine one bettor places €110 on Liverpool and another bettor wagers €110 on City. Obviously, one bettor will win and one will lose.
The sportsbook will pay €100 profit (€110 bet at 1.91 odds = €210 total, minus €110 stake = €100 profit) to the winner, and they'll collect €110 from the losing bettor.
The sportsbook earns €10 profit, and this is the business model. Bookmakers attempt to have as many bettors as possible place equal and opposite wagers, so they profit with no risk.
Understanding Vig in Probabilities
Odds are always associated with win probability. Because vig is included in odds, the resulting win probabilities won't be "fair" as they will include the vig.
Example with vig:
- Liverpool 1.91 odds = 52.4% implied probability
- Manchester City 1.91 odds = 52.4% implied probability
- Total = 104.8%
You'll notice those probabilities add up to 104.8%—which shouldn't be possible. That's because the additional 4.8% is the vig.
The no-vig calculator essentially backs out the "fair" odds by removing the 4.8% from both win probabilities, then finding the odds associated with the true "fair" win probabilities.
Fair probabilities (no vig):
- Liverpool: 52.4% / 104.8% = 50% fair probability
- Manchester City: 52.4% / 104.8% = 50% fair probability
- Total = 100% ✓
The No-Vig Price for this market would be 2.00 odds on both sides.
How to Calculate Fair Odds
Step-by-step process:
- Convert Side 1 odds to implied probability: 1 / 1.91 = 52.4%
- Convert Side 2 odds to implied probability: 1 / 1.91 = 52.4%
- Add probabilities: 52.4% + 52.4% = 104.8%
- Divide each by total to remove vig: 52.4% / 104.8% = 50%
- Convert back to odds: 100% / 50% = 2.00 fair odds
These are your No-Vig Fair Odds. To have positive EV, you need to find a bookmaker offering better than 2.00 on either side.
Using No-Vig Calculator for Value Betting
This calculator shows you the fair price. Now you need to find odds BETTER than the fair price.
Example:
- No-Vig Fair Odds: Liverpool 2.00
- Bet365 offers: Liverpool 2.10
- Result: +EV bet! (2.10 > 2.00 fair)
FairOdds Terminal automatically calculates No-Vig Price for every market across 60+ bookmakers and shows only opportunities where you beat the fair price.
Start your free trial for automated +EV detection with no-vig calculations built-in.
No-Vig Calculator FAQ
What does fair odds mean?
Fair odds (no-vig fair odds) are the true odds after removing the bookmaker's profit margin (vig). Although fair odds for evenly matched teams should be 2.00 (50% each), sportsbooks will offer 1.91 instead, building in vig to ensure profit.
How do you calculate fair odds?
Calculate implied probability for both sides, add them together (will exceed 100%), then divide each side's probability by the total to get fair probabilities. Convert back to odds. Example: 52.4% + 52.4% = 104.8%. Fair = 52.4% / 104.8% = 50% each side.
What is no-vig price?
No-Vig Price (NVP) is the fair odds after removing bookmaker vig. It represents the true probability of an outcome. You must beat the NVP to have positive expected value. If you bet below NVP, you have negative EV and will lose long-term.
How much vig do bookmakers charge?
Recreational sportsbooks charge 4-8% vig on most markets. Pinnacle, the sharpest sportsbook, charges under 2% vig. Lower vig means fairer odds and better value for bettors. High vig markets (8%+) are difficult to profit from.
Why is removing vig important?
Removing vig reveals true fair odds, letting you identify value bets. By comparing bookmaker odds to no-vig fair odds, you can find positive expected value opportunities where you're getting better than fair price.
What is the difference between odds and no-vig odds?
Regular odds include the bookmaker's vig (profit margin). No-vig odds are the true fair odds after removing vig. Example: 1.91 odds (with vig) vs 2.00 no-vig odds (fair). The difference is the bookmaker's edge.