Free Tool
No-Vig Fair Odds Converter
Remove the built-in margin (vig) to see the true fair odds and probabilities.
Odds providers build in a profit margin (sometimes called "vig" or "juice") into their odds. This means the implied probabilities of all outcomes add up to more than 100%.
This calculator removes the vig by:
- Converting the odds to implied probabilities
- Calculating the total vig (how much over 100% the probabilities add up to)
- Proportionally reducing each probability so they sum to exactly 100%
- Converting the fair probabilities back to odds in all formats
The result shows you what the odds would be in a perfectly fair market with no house edge.
What is vig (margin) in sports odds?
Vig (or margin) is the markup built into odds so that the implied probabilities of all outcomes add up to more than 100%. It represents the edge that the odds provider retains.
Why should I remove the margin from odds?
Removing the margin shows you the true fair market probability and odds. This helps you identify when odds offer value compared to the actual likelihood of an outcome.
How accurate are no-vig calculations?
No-vig calculations are mathematically precise for the odds you input. However, they assume the original odds accurately reflect the true probabilities, which may not always be the case.
What is a typical margin percentage?
Most sources carry a 4-5% margin on standard markets like point spreads and totals. However, the margin can be much higher on props, futures, and other specialty markets.
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