No-Vig Fair Odds Calculator - Remove Bookmaker Margin Instantly

What are No-Vig Fair Odds(also: devig Calculator)?

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)
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Calculator Results
Implied Probabilities Fair Analysis (No-Vig Analysis)
Please enter valid values for both odds.
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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 market odds and converts them into fair odds and implied probabilities. This allows users to see the true probability of each outcome without the built-in house edge, making odds comparison and market analysis more accurate.
Yes, fair odds and no-vig odds refer to the same concept. Both describe odds calculated after removing the bookmaker’s margin from the market. These odds represent normalized implied probabilities and are commonly used in analytical models and odds comparison tools.
Bookmakers include a margin (vig) in their odds to ensure profitability, which inflates the implied probabilities of all outcomes. Removing the vig provides a clearer view of each outcome’s true probability and helps users compare odds across markets or evaluate pricing efficiency.
The total probability exceeds 100% because bookmakers add a margin (vig) to their odds, which inflates the implied probabilities of all outcomes. A no-vig calculator removes this margin and normalizes the probabilities back to 100%, revealing the market’s fair odds.