No-Vig Fair Odds Calculator

What are No-Vig Fair Odds?

No-vig fair odds represent the true probability of outcomes without the sportsbook's built-in profit margin. By removing the vig, you can see what the odds would be in a perfectly efficient market and identify potential value bets.

This calculator removes the bookmaker's margin from any two-way market to reveal the fair odds and true probabilities, helping you make more informed betting decisions.

Enter Odds (Decimal)
Calculator Results
Implied Probabilities Fair Analysis (No-Vig Analysis)
Please enter valid values for both odds.
How to Use This Calculator

The No-Vig Fair Odds Calculator helps you determine the true probabilities and fair odds by removing the bookmaker's margin (vig) from the odds.

  • Odds 1: Enter the first odds
  • Odds 2: Enter the second odds

This calculator will show you:

  • The true probability for each outcome (without the vig)
  • The fair odds for each outcome (without the vig)

Note: The calculator assumes that the bookmaker has balanced the market. The sum of the implied probabilities will be greater than 100% due to the vig, and this calculator removes that margin to show you the true probabilities.

Tips & Best Practices
  • Use no-vig probabilities to identify value bets by comparing with your own estimates.
  • Fair odds help you understand what odds would be offered in a zero-margin market.
  • Compare no-vig odds across different sportsbooks to find the best available prices.
  • This tool works best with two-way markets like moneylines, spreads, or totals.

Frequently Asked Questions

A no-vig calculator removes the bookmaker’s margin (“vig”) from the market odds and converts them into fair probabilities. This helps bettors understand the true implied odds of each outcome without the house edge, making it easier to compare prices and identify value bets.
Bookmakers include a vig to ensure profit, which inflates the implied probability of all outcomes. By removing the vig, you get a more accurate representation of each side’s true chance of winning. This is useful when comparing multiple sportsbooks, building betting models, or evaluating whether a line offers real value.
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