The No-Vig (Fair Odds) Calculator removes the sportsbook margin from a betting line to show you the true fair odds. Just enter the odds for both sides of a market, and the tool instantly calculates the implied probabilities, normalizes them to remove the vig, and gives you the no-vig (fair) odds. This helps you spot when the line is offering real value – and when it isn’t.
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How to Use the No-Vig (Fair Odds) Calculator
The No-Vig Calculator strips out the sportsbook margin to show you the “true” odds of each side.
Inputs
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Odds Format – Choose American or Decimal.
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Side 1 Odds – Enter the odds for the first side (e.g., Team A -110).
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Side 2 Odds – Enter the odds for the opposite side (e.g., Team B -110).
Outputs
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Implied Probability Side 1 & Side 2 – Shows the probabilities implied by each line.
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Market Overround (Vig) – The built-in margin charged by the sportsbook (typically 4–6% in standard markets).
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No-Vig Probabilities – The adjusted, “fair” probabilities after removing the vig.
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No-Vig Odds – The true odds that would exist if no margin was added.
Example: At -110 / -110, the calculator will show about a 4.76% vig, with fair odds closer to -105 for each side.