📊 Vig Calculator

Calculate the vigorish (juice) charged by bookmakers on any bet

Vig % Calculation
Breakeven Win Rate
Sportsbook Comparison
Moneky tilt head

Vig Calculator

Quick Vig Calculator

Calculate vig for standard -110 bets and other common odds formats

Enter odds (American, Decimal, or Fractional)
Format of the odds entered

📈 Market Vig Calculator

Calculate total market vig across all outcomes for comprehensive analysis

Select the type of betting market to analyze

🏆 Sportsbook Vig Comparison

Compare vig across different sportsbooks for the same event to find the best value

Understanding Vigorish (Vig)

Vigorish, commonly called "vig" or "juice," is the commission charged by bookmakers built into betting odds. It represents the house edge and ensures bookmaker profitability regardless of outcomes.

Vig Calculation Formula

Vig % = (Implied Probability - True Probability) × 100
For single bets: Vig % = (1 ÷ Decimal Odds - 1 ÷ Fair Odds) × 100

📊 Practical Example

Standard -110 NFL Spread Bet:
Decimal Odds: 1.909 (equivalent to -110)
Implied Probability: 52.38%
Fair Probability: 50% (true 50/50 bet)
Vig Percentage: 52.38% - 50% = 2.38%
Breakeven Win Rate: 52.38% needed to break even
✅ This 2.38% is the bookmaker's built-in profit margin

Vig Ranges and Market Efficiency

✅ Low Vig (0-3%)

Markets: Major sports, high liquidity
Examples: NFL spreads, NBA totals, soccer moneylines
Typical Odds: -105 to -110
Efficiency: Very efficient markets
Strategy: Good value, suitable for frequent betting

⚠️ Medium Vig (3-7%)

Markets: Secondary sports, lower liquidity
Examples: College sports, tennis, golf
Typical Odds: -115 to -125
Efficiency: Moderately efficient
Strategy: Acceptable for selective betting

📈 High Vig (7-15%)

Markets: Niche sports, exotic bets
Examples: MMA, esports, alternative lines
Typical Odds: -130 to -150
Efficiency: Less efficient markets
Strategy: Requires strong edge to overcome

❌ Very High Vig (15%+)

Markets: Props, parlays, novelty bets
Examples: Player props, same-game parlays
Typical Odds: -200 or worse
Efficiency: Inefficient markets
Strategy: Generally avoid unless exceptional edge

Breakeven Win Rates by Odds

Understanding breakeven win rates helps you assess whether you have sufficient edge to overcome the vig and bet profitably.

📊 Common American Odds

+100 (Even): 50.00%
-105: 51.22%
-110: 52.38%
-115: 53.49%
-120: 54.55%
-130: 56.52%

💡 Strategic Implications

At -110 odds: Need 52.38% win rate
Edge Required: Must win >52.38% long-term
Vig Impact: 2.38% working against you
Break-even: 523 wins per 1000 bets
Profit Zone: Win rate >52.38%

Vig Reduction Strategies

✅ Line Shopping

Strategy: Compare odds across multiple sportsbooks
Impact: Can reduce effective vig by 1-3%
Tools: Odds comparison websites
Best Practice: Have accounts at 3-5 books
ROI Improvement: 10-30% increase in profitability

🎯 Market Selection

Focus: Target low-vig markets
Timing: Bet during peak hours for better lines
Sports: Stick to major leagues initially
Avoid: Props and exotic bets with high vig
Volume: Consistent low-vig beats occasional high-vig

🏆 VIP Programs

Reduced Vig: Some books offer -105 lines
Rebates: Cashback on losses
Enhanced Odds: Promotional better lines
Requirements: High volume or VIP status
Value: Can save 1-2% in effective vig

📱 Sharp Sportsbooks

Characteristics: Lower vig, higher limits
Examples: Pinnacle, BookMaker
Trade-off: Less promotions, faster limits
Audience: Professional and serious bettors
Benefit: Consistently lower vig rates

Common Vig Misconceptions

❌ Common Mistakes

  • Thinking -110 means 10% vig (it's actually 4.55%)
  • Ignoring vig when calculating expected value
  • Believing all sportsbooks have the same vig
  • Not factoring breakeven rates into strategy
  • Assuming higher odds always mean higher vig
  • Neglecting to shop lines for better vig rates

✅ Best Practices

  • Always calculate true vig percentage
  • Compare vig across multiple sportsbooks
  • Understand breakeven win rates for your bets
  • Factor vig into all profitability calculations
  • Focus on low-vig markets when possible
  • Use vig knowledge for better bankroll management

Frequently Asked Questions