Vig Calculator - Free Sportsbook Juice Calculator
Vig Calculator - Analyze Sportsbook Juice
Vigorish Analysis
Original Odds (With Vig)
Fair Odds (No Vig)
Probability Breakdown
| Outcome | Sportsbook Odds | Implied Prob | True Prob | Fair Odds |
|---|
What This Means:
How to Use This Vig Calculator:
- Select 2-way (spreads, totals) or 3-way (soccer, hockey) market
- Enter the odds from your sportsbook in any format
- Click "Calculate Vig" or watch it update automatically
- See the visual vig meter and rating
- Compare original odds to fair odds
- Use fair odds to identify value bets
What is a Vig Calculator?
A vig calculator is a free betting tool that calculates the vigorish (juice) that sportsbooks charge on bets. Also known as the "house edge" or "margin," vig is how sportsbooks ensure profitability. Our calculator instantly shows the exact percentage of juice built into any betting line with visual indicators.
Understanding vig is crucial for serious sports bettors. Whether you're betting on NFL spreads, NBA totals, or soccer three-ways, knowing the juice helps you shop for the best lines and identify positive expected value bets.
How to Calculate Vig (Vigorish)
The vig calculation reveals how much extra probability sportsbooks build into their lines:
Vig Formula for 2-Way Markets
Step 2: Add probabilities: P1 + P2
Step 3: Vig = (Total - 100%)
Example: -110/-110 odds
Each side = 52.38% probability
Total = 104.76%
Vig = 4.76%
Understanding the Results
After calculating vig, you can:
- See the exact juice percentage charged by the book
- Compare vig across different sportsbooks to find best value
- Understand true probabilities without the house edge
- Calculate fair odds for any betting market
Common Vig Examples in Sports Betting
Standard Market Vig Percentages
| Market Type | Typical Odds | Vig % | True Odds | Rating |
|---|---|---|---|---|
| NFL Spread | -110/-110 | 4.76% | +100/+100 | Average |
| Reduced Juice | -105/-105 | 2.44% | +100/+100 | Excellent |
| MLB Moneyline | -150/+130 | 3.51% | -143/+143 | Good |
| NBA Total | -115/-105 | 4.88% | -110/+110 | Average |
| Live Betting | -120/-102 | 5.10% | -111/+111 | High |
3-Way Market Vig Example
| Soccer Match | Odds | Implied Prob | True Prob | True Odds |
|---|---|---|---|---|
| Home Win | +200 | 33.33% | 31.82% | +214 |
| Draw | +250 | 28.57% | 27.27% | +267 |
| Away Win | +150 | 40.00% | 40.91% | +144 |
| Total | - | 104.76% | 100% | Vig: 4.76% |
Why Vig Matters in Sports Betting
Impact on Long-Term Profitability
Understanding vig is crucial for betting success:
- Higher vig = higher break-even win rate needed
- 4.76% vig requires 52.38% wins to break even
- 2.44% vig requires only 51.22% wins to break even
- Small differences compound over hundreds of bets
Break-Even Win Rates by Vig
Different vig levels require different win rates to profit:
- 2.44% vig (-105 odds): Need 51.22% win rate
- 4.76% vig (-110 odds): Need 52.38% win rate
- 6.98% vig (-115 odds): Need 53.49% win rate
- Every 1% reduction in vig = ~0.5% easier to profit
Line Shopping Benefits
| Sportsbook | Spread Odds | Vig % | Cost per $100 |
|---|---|---|---|
| Book A | -110/-110 | 4.76% | $4.76 |
| Book B | -105/-105 | 2.44% | $2.44 |
| Book C | -107/-107 | 3.40% | $3.40 |
| Savings: | $2.32 per $100 bet | ||
Types of Betting Markets and Their Vig
Low Vig Markets (< 3%)
- Major sports moneylines: High volume = competitive pricing
- Reduced juice books: Pinnacle, exchanges
- Promotional lines: Loss leaders to attract customers
Standard Vig Markets (3-5%)
- NFL/NBA spreads: Usually -110 on both sides
- Totals (Over/Under): Similar to spreads
- MLB/NHL moneylines: Varies by matchup
High Vig Markets (> 5%)
- Player props: Less liquidity, higher margins
- Exotic bets: Parlays, teasers, pleasers
- Live betting: Quick adjustments = higher vig
- Futures: Long-term risk = more juice
How to Use Vig Information
1. Shop for Better Lines
Small vig differences add up over time:
- -105 vs -110 saves 2.3% per bet
- On 100 bets of $110 each, save $253
- Use multiple sportsbooks for best prices
2. Identify Sharp vs Recreational Books
| Book Type | Typical Vig | Characteristics |
|---|---|---|
| Sharp Books | 2-3% | High limits, pros welcome |
| Recreational Books | 4-6% | Bonuses, limit winners |
3. Understand Your Required Win Rate
Vig directly impacts profitability thresholds:
- -110 odds: Need 52.38% to break even
- -105 odds: Need 51.22% to break even
- +100 odds: Need 50% to break even (no vig)
Advanced Vig Concepts
Creating Low-Vig Lines
Reduce your vig exposure by shopping for best prices:
- Find best price on each side across books
- Calculate combined vig
- Often can achieve near 0% vig
- Requires accounts at multiple sportsbooks
Vig and Arbitrage
When combined vig goes negative, arbitrage exists:
- Book A: Team 1 at +110
- Book B: Team 2 at +105
- Combined implied probability: 47.62% + 48.78% = 96.40%
- Negative vig of -3.60% = guaranteed profit
- Use our arbitrage calculator to find these
Frequently Asked Questions
What is a vig calculator?
A vig calculator is a free betting tool that calculates the vigorish (juice) that sportsbooks charge on bets. It shows the vig percentage and reveals the true probability of each outcome without the bookmaker's edge. This helps bettors identify value and understand exactly how much commission they're paying on each bet.
How do you calculate vig on a bet?
To calculate vig: First convert all odds to implied probability. For -110/-110: each side is 52.38% probability, totaling 104.76%. The vig equals total probability minus 100%, so 4.76%. To find true odds, divide each probability by the total: 52.38% ÷ 104.76% = 50% true probability.
What is good vig in sports betting?
Good vig in sports betting is under 4%. Reduced juice sportsbooks offer 2.44% vig (-105 on both sides), while standard books charge 4.76% (-110 on both sides). Sharp books like Pinnacle often have 2-3% vig, while recreational books charge 5-7%. Lower vig means better value for bettors.
Why does vig matter for sports bettors?
Vig directly impacts your break-even win rate. At -110 odds (4.76% vig), you need to win 52.38% of bets to break even. At -105 odds (2.44% vig), you only need 51.22%. This 1.16% difference compounds over hundreds of bets, making vig reduction crucial for long-term profitability.
How can I reduce the vig I pay?
Reduce vig by: 1) Shopping multiple sportsbooks for the best lines, 2) Using reduced juice books like Pinnacle or exchanges, 3) Taking advantage of promotions that offer better odds, 4) Focusing on high-volume markets with competitive pricing, 5) Avoiding exotic bets and props with higher margins.
Related Calculators
- No Vig Fair Odds Calculator - Calculate fair odds without juice
- Hold Calculator - Similar concept for sportsbook hold
- Implied Probability Calculator - Convert odds to probabilities
- Expected Value Calculator - Calculate bet profitability
- View all 30 Free Betting Calculators
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