Betting Odds Tool
Free No Vig Calculator
Remove the bookmaker margin from two-way betting odds to estimate fair no-vig odds and implied probabilities. You can enter either American odds or decimal odds, and the calculator will strip out the vig to show the market’s cleaner probability estimate.
Enter both sides of the market
Use the odds for Team A and Team B, or Over and Under, or Yes and No. The calculator converts the odds to implied probabilities, removes the margin, then converts the fair probabilities back into no-vig odds.
Formula used:
1. Convert each market odd into implied probability.
2. Add the implied probabilities to find the bookmaker overround.
3. Remove vig by dividing each implied probability by the total implied probability.
4. Convert the fair no-vig probabilities back into American or decimal odds.
Example:
No-vig probability = implied probability ÷ (sum of both implied probabilities)
1. Convert each market odd into implied probability.
2. Add the implied probabilities to find the bookmaker overround.
3. Remove vig by dividing each implied probability by the total implied probability.
4. Convert the fair no-vig probabilities back into American or decimal odds.
Example:
No-vig probability = implied probability ÷ (sum of both implied probabilities)
Sportsbook Margin
0.00%
Total Fair Probability
100.00%
Side 1 Fair Probability
0.00%
Side 2 Fair Probability
0.00%
Implied Probability Sum
0.00%
Side 1
Market Implied Probability0.00%
No-Vig Fair Probability0.00%
No-Vig American Odds0
No-Vig Decimal Odds0.00
Side 2
Market Implied Probability0.00%
No-Vig Fair Probability0.00%
No-Vig American Odds0
No-Vig Decimal Odds0.00
Odds format used
American
Side 1 original odds
0
Side 2 original odds
0
Fair no-vig odds comparison
–
This no vig calculator is for two-way markets only. It removes the bookmaker margin mathematically, but it does not guarantee that the resulting fair odds reflect all real-world information, injuries, liquidity, or sharp market movement.
Note: This tool is for informational and educational purposes only. Results are estimates and do not constitute professional advice. By using this calculator, you agree that Waldev is not liable for any errors or damages. Always verify results with official sources.
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