Vig Calculator – See the Hidden Cost in Betting Odds

Quickly find out how much sportsbooks charge with our Vig Calculator. Just input the odds for both sides of a bet and we'll reveal the vigorish or “juice” being taken.

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Vig Calculator

American
American
Decimal
Fractional

Results

Implied Probability (Home): -
Implied Probability (Away): -
Total Implied Probability: (should equal 1.0 in fair markets) -
Vig Percentage: -
Fair Odds (Home): -
Fair Odds (Away): -
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What Is a Vig in Sports Betting?

“Vig” is short for vigorish, the built-in fee sportsbooks charge to guarantee profit regardless of the bet's outcome. It's commonly seen in standard -110 odds, where both sides of a bet require you to wager $110 to win $100. That small edge ensures the bookmaker wins over time – even when bettors break even overall.

Using a Vigorish Calculator helps you quantify this hidden cost and assess the true value of the odds you're betting on.

How the Vig Calculator Works

Our Vig Calculator determines the juice by analyzing the odds from both sides of a betting market. Whether you're working with American, Decimal, or Fractional odds, the tool:

  • Converts odds to implied probabilities
  • Adds them together
  • Subtracts 100% to calculate the overround (i.e., the vig)

If the total exceeds 100%, you're paying a vig. The higher the number, the worse the value for the bettor.

How to Use the Vigorish Calculator

To use our Vigorish Calculator:

  1. Enter the odds for both sides of a wager.
  2. Select your preferred odds format (American, Decimal, or Fractional).
  3. Hit Calculate and instantly see how much vig the sportsbook is taking.

It's a simple, effective way to spot overpriced lines and find better value across books.

Vig Calculation Example

Let's say you're looking at an NFL game where both teams are listed at -110 odds.

  1. 1. Convert -110 to implied probability: Team A: 52.38% and Team B: 52.38%
  2. 2. Add the two probabilities: 52.38% + 52.38% = 104.76%
  3. 3. Subtract 100% to find the vig: 104.76% – 100% = 4.76%

Conclusion: In this case, the sportsbook is charging a 4.76% vig, meaning that's the built-in edge they're profiting from regardless of which team wins.

Why Use the GambleSpot Vig Calculator?

Many sportsbooks hide their edge behind complex odds formatting. Our Vig Calculator strips away that confusion and gives you a transparent look at how much you're actually paying to place a bet.

Whether you're a sharp bettor or a casual player, knowing the vig is essential for making profitable decisions. The lower the vig, the better the value.

Questions You May Have

What does a vig mean in betting?

A vig, or vigorish, is the cut that sportsbooks take from each wager. It's the reason odds on both sides of a bet don't add up to a fair 100%.

How do I calculate vigorish manually?

Convert both sets of odds to implied probabilities, add them, and subtract 100%. The result is the vig percentage.

Why should I care about the vig?

Because it directly affects your long-term profitability. Lower-vig sportsbooks give you a better chance of beating the market.

Can I use this calculator for live odds?

Yes! Just plug in the current odds from your sportsbook to reveal how much they're charging in real-time.

Author
Author: Paul Daniel Flores
Updated: 5 hours ago
Author: Paul Daniel Flores
Writer l Sports and Esports Expert
Updated: 5 hours ago

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