No-Vig Odds Calculator | Get the Vig-Free Odds
About this Vig-Free Calculator
This No-Vig Odds Calculator lets you find the vig-free odds and no-vig probabilities when you enter the odds of both sides of a bet.
You can select between American, Decimal, Fractional, Hong Kong, Malaysian, and Indonesian odds formats. After you enter your odds, the calculator will automatically generate the vig-free odds in the same format. To convert between formats, use our odds converter and bet calculator.
How to use this No-Vig Odds Calculator
To use this no-vig odds calculator:
- Select your odds format.
- Enter the odds for both sides of your bet.
The vig-free odds and no-vig probabilities for each side will automatically be calculated after you've entered valid data.
An error message will be displayed if you enter invalid odds. It will go away after you enter valid odds.
Valid odds for each format:
- American Odds must be a number greater than or equal to 100 (e.g., 115 or +115) or a number less than -100 (e.g., -115).
- Decimal Odds must be a number greater than 1.
- Fractional Odds must be a fraction (e.g., 1/1, 1/2, 5/2, etc.).
- Implied Probability must be expressed as a percentage (e.g., 25%). Valid probabilities for the converter must be greater than 0% and less than 100%.
- Hong Kong Odds must be a number greater than 0.
- Malaysian (Malay) Odds must be a number between -1 and 1, and not 0.
- Indonesian Odds must be a number greater than or equal to 1 or less than or equal to -1.
What Does Vig Mean in Betting? (also known as "Juice" and "House Edge")
Vig, short for vigorish, is the house edge in sports betting. By adding vig or "juice" to their betting odds, sportsbooks can guarantee that they'll profit regardless of the outcome of a game.
A common example of vig is both sides of a 2-way bet having -110 American odds (roughly 1.91 in decimal odds and 10/11 in fractional odds). At -110 American odds, a winning $100 bet will profit $90.91. However, a losing $100 bet will lose $100.
The example above shows how vig helps sportsbooks ensure a profit. If a sportsbook had an equal amount of money wagered on both sides of this 2-way bet, they'd profit $9.09 for every $200 wagered ($100 wagered on each side for $200 of total bets - $190.91 paid to winners = $9.09 profit).
What are No-Vig Odds (Vig-Free, Fair Odds)
No-vig odds (also known as "vig-free" or "fair odds") remove vig to show you the true odds a bet has to win. In the example above, where both sides of a 2-way bet were -110, the fair odds for each side are +100. In other words, the chance of winning for both sides would be 50%.
How to Calculate Vig-Free Odds
Below, we explain how to calculate vig-free odds for popular odds formats.
How to Calculate No-Vig Odds for American Odds
To calculate the no-vig odds for odds in the American odds format, we first have to find the implied probability of each side.
For negative American odds, you can calculate the implied probability using the following formula:
Implied Probability = ((American Odds * -1) / (American Odds * -1 + 100)) * 100
For positive American odds, you can calculate the implied probability using the following formula:
Implied Probability = (100 / (American Odds + 100)) * 100
Using our previous example, where both sides have -110 odds, the implied probability for both sides is 52.38%.
((-110 * -1) / (-110 * -1 + 100)) * 100 = 110 / (110 + 100) * 100 = 110 / 210 * 100 = 52.38%
Both sides implied probability is 52.38%, combining to a total of 104.76%. The additional 4.76% is the vig the sportsbook added to their odds.
To remove the vig, divide each side's implied probability by the total combined implied probability and multiply this by 100:
52.38 / 104.76 * 100 = 50%
In this example, both teams have 50% odds with the vig removed.
How to Calculate No-Vig Odds for Decimal Odds
To calculate vig-free odds for odds in the decimal odds format, start by finding the implied probability of each side of a bet. To calculate the implied probability for decimal odds, use the following formula:
Implied Probability = 1 / Decimal Odds * 100
Using the previous example, where both sides of a 2-way outcome had 1.91 decimal odds, the implied probability for both sides is 52.36%.
1 / 1.91 * 100 = 52.36%
Both sides have an implied probability of 52.36%, combining to total 104.72%. The additional 4.72% is the vig added by the sportsbook.
To remove the vig, divide each side's implied probability by the total combined implied probability and multiply by 100:
52.36 / 104.72 * 100 = 50%
In this example, both teams have 50% odds with the vig removed.
How to Calculate No-Vig Odds for Fractional Odds
To calculate vig-free odds for fractional odds, first find the implied probability of each side of the bet. To calculate the implied probability for fractional odds, use this formula:
Implied Probability = (denominator / (denominator + numerator)) * 100
Again, using the previous example where both sides of a 2-way bet had 10/11 fractional odds, the implied probability for both sides is 52.38%.
(11 / (11 + 10)) * 100 = 52.38%
Both sides of the bet have an implied probability of 52.38%, combining to 104.76%. The additional 4.76% is the vig.
To remove the vig, divide each side's implied probability by the total combined implied probability and multiply this by 100:
52.38 / 104.76 * 100 = 50%
In this example, both teams have 50% odds with the vig removed.