Vig Calculator for Sports Betting (May 2025)

The vig is the commission that sports betting sites build into their odds, and this applies to every market. Therefore, if we eliminate the vig, then you can see the true odds for a pick instead. 

There are specific sports events and betting markets when you can use this to best effect. Hopefully, after reading this content, you will be informed about vig and know how to place bets to land a solid return on a long-term basis.  

In this vig calculator guide, we will go into more detail regarding the vig and how it’s calculated. We’ll also talk about what a favorable vig is and how to use a vig betting calculator. 

Vig is actually short for vigorish and can often be referred to as the juice. It’s a term which describes the fee that a sportsbook effectively charges for placing bets. 

The vig is not always transparent, and that is why a vig odds calculator can help you understand it. It’s good to have your eyes open as a bettor when it comes to placing wagers on the latest sporting events through sports betting apps.

If the Miami Dolphins are +110 on the Moneyline, that gives an implied probability of 47.6% that they win. However, the vig line calculator will instead indicate that the no-vig odds are +100, which is a 50% probability. We’re using this vig betting calculator to extract the fair odds and help you place more informed bets as a result.

Every sportsbook will have a way of calculating vig. They will have the real odds based on data and then create betting odds with the vig built in. 

This could be anything between 2% and 10% based on the operator. Each sportsbook will have different odds available, and the key is to find the biggest one for each selection. 

Let’s say bet365 have Houston Rockets at -116 and their opponents Golden State Warriors at -105 on the spread. The implied probability for the Rockets is 53.7% and the latter is 51.02%. You can see that the total probability is 104.9% which means the overall vig is 4.9% here. It means you can’t bet on both selections with the same sportsbook and get a profitable return. 

OK, so the previous example wasn’t a favorable vig. However, we can use a vig odds calculator to achieve this. We need to sign up with multiple sportsbooks to compare the lines. 

We might find that the Golden State Warriors are +110 with DraftKings Sportsbook, having been -105 with bet365. 

Using a vig calculator will help us understand that the Warriors implied probability is lower than the real probability. Which gives us a pathway to place a bet on this selection.

It’s easy to use a vig betting calculator. You can enter the odds for the two selections on a moneyline, spread, or total market. These will then give you the no-vig percentage along with the no-vig odds. 

The LA Clippers and Denver Nuggets might be -116 and -105, respectively, on the Moneyline. Entering these NBA odds into the vig calculator will demonstrate that the Clippers have a no-vig percentage of 51.18% and no-vig odds of -105. 

It will also reveal that the Nuggets have a no-vig percentage of 48.82% and no-vig odds of +105. You can therefore see what the market would look like if there were no juice applied. 

You should always aim to use a vig calculator before placing a sports bet. It’s always good to run the numbers and understand the real probability of a team winning. 

However, a vig betting calculator doesn’t mean a guaranteed win. It can be used for planning the best sports bets rather than being too reactive about a sportsbook’s published odds. 

It certainly helps to highlight any discrepancies that are apparent when it comes to looking at the different lines supplied by the sports betting apps. 

Use this in conjunction with other betting tools: Implied Probability Calculator, Positive Expected Value Calculator

OddsJam helps subscribers to place sports bets more effectively. They scan the odds of hundreds of sportsbooks to understand where the value lies. 

This means that Bookies.com readers can understand which selections offer the best chance of a profitable return. They are in the business of providing an opportunity to make a long-term return on investment. 

You can use the OddsJam vig odds calculator along with a wide range of other tools. Subscribers can also benefit from free coaching calls and excellent customer service. It’s great to develop knowledge, and their resources are highly educational. 

Bookies.com readers can create an OddsJam account and benefit from using tools like the vig line calculator. You can tap through from this article and begin the signup process. You simply need to enter some basic details and decide what package you would like. There’s even the chance to get a seven-day free trial. 

When entering your payment information, you can then enter the OddsJam Promo Code BOOKIES. This will ensure that you get a discounted rate and you can then start to benefit from the overall service and not just the vig calculator.