No Vig Calculator – Remove Vigorish from Betting Odds
Remove vigorish from betting odds to find true probabilities
Table of Contents
How to Use
- Select your odds format (American, Decimal, or Fractional)
- Enter the odds for team 1 or outcome 1
- Enter the odds for team 2 or outcome 2
- Click calculate to see the vig percentage and true probabilities
What is Vigorish (Vig)?
Vigorish, commonly called vig or juice, is the commission charged by bookmakers on betting markets. It's built into the odds to ensure the bookmaker makes a profit regardless of the outcome.
For example, in a fair coin flip, true odds would be +100 (2.00 decimal) for both sides. But bookmakers might offer -110 on both sides, creating a 4.55% vig that guarantees their profit.
How to Calculate No-Vig Odds
To remove the vig and find true probabilities:
- Convert odds to implied probabilities
- Add the probabilities together (they'll exceed 100%)
- The excess over 100% is the vig percentage
- Divide each probability by the total to get true probabilities
- Convert back to odds for no-vig fair odds
Example Calculation
Consider a game with these odds:
- Team A: -110 (implied probability: 52.38%)
- Team B: -110 (implied probability: 52.38%)
- Total: 104.76% (vig = 4.76%)
No-vig calculation:
- Team A true probability: 52.38% ÷ 1.0476 = 50%
- Team B true probability: 52.38% ÷ 1.0476 = 50%
- Team A no-vig odds: +100 (2.00 decimal)
- Team B no-vig odds: +100 (2.00 decimal)
Using No-Vig Odds to Find Value
No-vig odds help identify value bets:
- Compare no-vig odds across multiple sportsbooks
- If your own probability estimate exceeds the true probability, it's a value bet
- Lower vig means better value for bettors
- Track vig percentages to find the best sportsbooks
- Use no-vig odds as a baseline for line shopping
Frequently Asked Questions
- What is a good vig percentage?
- A typical vig for two-way markets is 4-5%. Lower is better for bettors. Sharp sportsbooks often have 2-3% vig, while recreational books may charge 5-8% or more.
- Why do bookmakers charge vig?
- Vig guarantees bookmakers make a profit regardless of the outcome. It compensates them for taking on risk and operating costs. Without vig, bookmakers would only profit when betting action is imbalanced.
- Can I use this calculator for three-way markets?
- This calculator is designed for two-way markets (e.g., moneylines, spreads). For three-way markets (e.g., win-draw-win), you'd need to include all three outcomes in the calculation.
- How does vig affect my betting strategy?
- Higher vig means you need to win more bets to be profitable. At -110 odds (4.55% vig), you need to win 52.4% of bets to break even. Lower vig reduces the win rate needed for profitability.