No-Vig Calculator
Remove the sportsbook’s built-in margin (vig or juice) to see what the betting odds would look like without it. Enter the prices for each possible outcome to calculate the market’s overround, estimated fair odds and adjusted probabilitie
No-vig calculator
Enter the odds for every outcome in one market to see its overround and proportional no-vig probabilities.
- Total implied probability
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- Market overround
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| Outcome | Implied probability | No-vig probability | No-vig odds |
|---|
Include all mutually exclusive outcomes from the same market, including a draw where applicable. Uses proportional normalization: each implied probability is divided by their sum. These estimates are not true win probabilities. Negative overround means the entered market is below 100%. Figures are rounded estimates.
How to Use Our No-Vig Calculator
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Choose your odds format
Select American, decimal or fractional odds.
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Enter the betting odds
Add the odds for both sides of a two-way market, or include a third outcome if a draw is possible.
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Add or remove outcomes
Make sure every possible result in the market is included.
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Check your result
See the sportsbook's margin, the adjusted probabilities and the corresponding no-vig odds.
| Result | What it means |
|---|---|
| Total implied probability | The combined implied probabilities of all outcomes in the market. |
| Market overround | The amount by which the total implied probability exceeds 100%, representing the market’s built-in margin. |
| Implied probability | The probability represented by the original betting odds, including the vig. |
| No-vig probability | The estimated probability after removing the margin proportionally. |
| No-vig odds | The corresponding betting odds without the estimated sportsbook margin. |
What Is Vig in Sports Betting?
Vig, also called juice, is the margin sportsbooks build into their betting odds. It’s one of the main ways they make money.
For example, imagine an NFL point spread where both teams are priced at -110. Each side has an implied probability of 52.38%, giving a combined probability of 104.76%.
Since only one side can win, the combined probability should be 100% in a fair two-outcome market. The extra 4.76 percentage points represent the sportsbook’s overround and without that margin, both teams would be priced at +100, assuming they’re equally likely to win.
How Does the No-Vig Calculator Work?
Our calculator uses proportional normalization to remove the margin from each outcome.
It starts by converting the betting odds into implied probabilities. These probabilities are then divided by their combined total so that the adjusted figures add up to 100%. Here’s how that works for an NFL point spread with -110 odds on both teams:
| Original odds | Implied probability | No-vig probability | No-vig odds | |
|---|---|---|---|---|
| Team A | -110 | 52.38% | 50.00% | +100 |
| Team B | -110 | 52.38% | 50.00% | +100 |
| Total | 104.76% | 100.00% |