Vig calculator.
The vig, also called juice or vigorish, is the commission a bookmaker bakes into its odds. Enter the price on each side of a market and this free calculator shows you the vig percentage, the total implied probability, and the no-vig fair odds, the true price once the margin is stripped out. It handles two-way and three-way markets in decimal or American odds.
Strip out the juice
LiveThe vig
4.76%
total implied 104.76%
No-vig fair odds
The vig is how much the prices add up over a true 100%. The fair odds are what each side would pay with the margin removed. Calculations run in your browser; nothing is stored. For entertainment, not betting advice.
The short answer
What is the vig (juice or vigorish)?
The vig, short for vigorish and also called juice, is the commission a bookmaker builds into its odds. It is the reason the implied probabilities of every outcome add up to more than 100%: that extra slice is the book’s margin, the edge it holds on every market whatever the result.
How to use this calculator
Enter the odds for each side of the same market, ideally both sides of a two-way bet such as a point spread, or all three of a 1X2 football market. Pick your odds format, American or decimal. The calculator adds up the implied probabilities, shows the vig the book is charging, and works out the no-vig fair odds, what each side would pay if the margin were removed.
The vig is the headline number. The fair odds underneath are the useful part: they are your benchmark for whether a price anywhere else is good value.
The formula
No black box.
Here is the math.
Turn every price into a probability, add them up, and whatever sits above 100% is the vig.
# Implied probability (from decimal odds)
implied = 1 / decimal odds
# Overround = total implied across all sides
overround = implied₁ + implied₂ (+ implied₃)
# The vig
vig = overround − 1
# No-vig fair probability
fairₕ = impliedₕ / overround
# No-vig fair odds
fair oddsₕ = 1 / fairₕWorked through
How to calculate the vig.
Take the most common line in US sports: both sides of a spread priced at -110, the standard “ten cents” of juice.
American odds of -110 mean you risk 110 to win 100, which is an implied probability of 110 divided by 210, or 52.38%. Both sides are priced the same, so together they imply 52.38% plus 52.38%, which is 104.76%.
A true market would add up to exactly 100%. This one adds up to 104.76%, so the vig is the 4.76% on top. That is the book’s built-in margin: no matter which side wins, it expects to keep a slice of the total staked. On a balanced book taking equal money on both sides, that 4.76% overround is roughly a 4.55% hold on the money wagered.
The pattern holds for any market. Convert each price to an implied probability, add them up, and the amount above 100% is the vig.
The useful bit
Removing the vig: fair odds.
No-vig fair odds show the true price of each side once the margin is stripped out. They are the benchmark sharp bettors actually use.
To remove the vig, divide each side’s implied probability by the overround. For -110/-110, each side is 52.38% divided by 104.76%, which is exactly 50%. Convert 50% back to odds and you get 2.00 in decimal, or +100 in American. So the fair, no-vig price of a -110 coin-flip is +100 on both sides.
It is more telling when the sides are uneven. Take -150 on one side and +130 on the other. They imply 60% and 43.48%, an overround of 103.48% and a vig of 3.48%. Strip it out and the fair probabilities are 57.98% and 42.02%, which is roughly -138 and +138. Those fair prices are what the market really thinks, with the book’s cut taken off.
This calculator does that for you and shows the fair odds in whichever format you picked, so you can read the true line at a glance.
Why bother
Why no-vig odds matter.
Fair odds turn a sharp market into a measuring stick for value everywhere else.
The idea is simple. Take a sharp, heavily bet market, the kind that prices events accurately, and strip its vig to get the fair odds. That fair price is the closest thing to the true probability of the outcome. Now look at the same bet at another book. If you can get a better price than the fair odds, you have found positive expected value, a +EV bet, because you are being paid more than the true chance suggests.
For example, if the no-vig fair price on a team is +138 and another book is offering +155 on the same team, that gap is your edge. Over many such bets, backing prices that beat the fair line is how disciplined bettors grind out a long-term profit. Without de-vigging, you are comparing prices that all still contain different amounts of margin, which tells you very little.
Two sides or three
2-way vs 3-way vig.
The more outcomes a market has, the more places a book can hide its margin, so three-way markets usually carry more vig.
A two-way market such as a spread or a moneyline with no draw typically runs a vig of around 4% to 5% at a standard book, and less at a sharp one. A three-way market like football’s home, draw and away tends to be higher, often 5% to 10%, because the extra outcome gives the book another line to pad.
Take a 1X2 priced at 2.10, 3.40 and 3.40 in decimal. Those imply 47.62%, 29.41% and 29.41%, adding to 106.44%, a vig of 6.44%, noticeably fatter than the 4.76% on the two-way example above. The draw is where books most often tuck away extra margin, since casual bettors rarely back it, so the draw price is frequently worse value than it looks. Running a three-way market through this calculator shows you exactly how the margin is spread across the three prices.
Going deeper
Devigging methods.
There is more than one way to remove the vig. This calculator uses the standard method, but it is worth knowing the others exist.
Multiplicative (the standard)
Divide each side’s implied probability by the overround. It is the most common method, keeps the relationship between the prices intact, and is what this calculator uses. For most everyday purposes it is the right default.
Additive
Spread the vig evenly by subtracting an equal share of the margin from each side. Simple, but it tends to over-correct heavy favourites, so it is less accurate on lopsided markets.
Power and Shin
More advanced models. The power method raises probabilities to an exponent to fit the margin, while the Shin method tries to account for insider money. Sharps use them to fine-tune favourite-longshot bias, but the difference from the multiplicative method is usually small.
Know the number
What is a normal vig?
A fair vig sits around 2% to 5%. The lower it is, the more of your money stays yours.
The standard -110/-110 line carries about 4.76% of vig, and that is the benchmark most bettors are used to. Sharp or “reduced juice” books cut it: a -105/-105 line on the same market is only 2.44% of vig, and a few markets get priced even tighter. It sounds like a rounding error, but over hundreds of bets the difference between paying 4.76% and 2.44% on every wager is the difference between a slow bleed and a fighting chance.
This is why line shopping matters. The same bet at a lower-vig book is simply a better deal, every single time, before you even consider who wins. Use the vig number as a quick health check on any market: a low figure means a fair price, while a fat one, especially on a three-way or a niche prop, is a flag that the book is taking a big cut.
The slow bleed
How the vig adds up.
A few percent per bet sounds trivial. Across a season of betting it is the single biggest cost you pay, and it never stops.
Imagine you bet 100 a game and you are a perfect coin-flip bettor, winning exactly half your bets. You should break even. You do not, because of the vig. On standard -110 pricing the book holds roughly 4.5% of the money wagered, so over 1,000 bets and 100,000 of total turnover, the juice alone quietly costs you somewhere around 4,500 across the season, even though your picks were a wash.
Now switch to a reduced-juice book at -105. The hold roughly halves to about 2.3%, and that same season of betting costs you closer to 2,300. You did nothing different except pay less margin, and you kept over 2,000 more. That is why experienced bettors treat the vig as a recurring tax to be minimised, not an afterthought. Winning bettors are not beating the game by huge margins; they are beating it by small ones, and a fat vig erases a small edge entirely.
Where it really hurts
The vig on parlays.
Parlays feel like good value because the payouts are big. The maths says otherwise, because every leg drags its own vig into the bet.
A single -110 bet carries about 4.76% of vig. Combine several of them into a parlay and the margins do not add, they compound, because the parlay price is built by multiplying the legs together, vig and all. The result is that the effective margin on a multi-leg parlay is far higher than the vig on any single leg.
A two-leg parlay can carry an effective hold of roughly 9% to 10%, and a four-leg parlay can climb past 20%, even though each individual leg looked like a fair-ish 4.76%. That hidden compounding is exactly why bookmakers promote parlays so heavily: they look exciting and pay long, but the house edge baked into them is several times that of a straight bet. Knowing the single-bet vig, and how it multiplies, is the quickest way to see why straight bets are usually the better value.
Before you bet
An honest word on the vig.
The vig is the house’s edge, and it never goes away. Understanding it and shopping for lower juice tilts the maths a little less against you, but it does not make betting profitable on its own: you still have to pick winners better than the fair odds imply. De-vigging is a tool for finding value, not a guarantee of it.
Treat this as a way to understand pricing and bet a little smarter, not a system. Only ever stake money you can afford to lose, and if betting stops being fun or starts feeling out of control, free confidential help is at BeGambleAware.org.
Questions
Vig questions.
What is the vig in betting?
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The vig, short for vigorish and also called juice, is the commission a bookmaker builds into its odds. It is why the implied probabilities of all outcomes add up to more than 100%. That extra slice above 100% is the book’s margin, the edge it holds on the market whatever the result.
How is the vig calculated?
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Convert each side’s odds to an implied probability, which is 1 divided by the decimal odds, then add them up. The total above 100% is the vig. For a -110/-110 market each side is 52.38%, totalling 104.76%, so the vig is 4.76%.
What is a no-vig or fair odds calculator?
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A no-vig calculator strips the margin out of a market to show the true odds of each side. It divides each implied probability by the total, giving fair probabilities that add to exactly 100%, then converts them back to odds. Those fair odds are your benchmark for spotting value elsewhere.
What is a normal or fair vig?
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A fair vig is usually around 2% to 5%. The standard -110/-110 line is about 4.76%, while reduced-juice books cut it to roughly 2.44% with -105/-105 pricing. Three-way markets tend to run higher, between 5% and 10%.
How do you remove the vig from odds?
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Convert every side to an implied probability, add them to get the overround, then divide each probability by that overround. The results add to 100% and are the fair probabilities. Convert them back to odds and you have the no-vig fair price for each outcome.
Why are no-vig odds useful?
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No-vig odds from a sharp market are the closest thing to the true probability of an outcome. If another book offers a better price than those fair odds, you have found positive expected value. Comparing fair odds to available prices is the core of value betting.
Is lower vig always better?
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For the bettor, yes. A lower vig means the book is taking a smaller cut, so more of your stake works for you. The same bet at a reduced-juice book is a better deal every time, which is why line shopping for the lowest vig is one of the simplest edges available.
Why is the vig higher on 3-way markets?
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A third outcome gives the book another price to pad. Three-way markets such as 1X2 football often run 5% to 10% vig, with the draw carrying the most hidden margin because casual bettors rarely back it. More outcomes mean more room to build in commission.
What is the difference between vig and hold?
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The vig is the overround, how far the implied probabilities exceed 100%. The hold is the book’s actual expected profit as a share of money wagered on a balanced market. They are close but not identical: a 4.76% vig on a -110/-110 line works out to about a 4.55% hold.
What is reduced juice?
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Reduced juice means a book charges less vig than the standard -110. A -105/-105 line, for instance, cuts the vig from about 4.76% to 2.44%. Reduced-juice books are popular with serious bettors because paying less margin on every bet adds up significantly over time.
How do I find no-vig odds?
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Take a sharp, two-sided market, convert each price to an implied probability, and divide each one by the total. The results are the fair, no-vig probabilities, which you convert back to odds. This calculator does it for you: enter both sides and read the fair odds it returns.
Does every bet have vig?
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At a bookmaker, almost always. The main exception is a betting exchange, where you bet against other people and pay a commission on winnings instead of a built-in margin, so the headline odds can be effectively vig-free. Standard sportsbook markets always include vig.
What is the vig on a parlay?
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Higher than it looks. Each leg carries its own vig, and because parlay prices multiply the legs together, the margins compound. A multi-leg parlay can carry an effective hold several times the single-bet vig, which is why parlays are so profitable for books.
Can you bet with no vig?
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True zero-vig betting is rare. Betting exchanges remove the built-in margin in exchange for a commission, and occasional no-vig promotions or odds boosts appear, but standard bookmaker markets always include some vig. Removing it yourself, by de-vigging, is about finding value rather than betting margin-free.
About the developer
Jean Borg
Jean builds and maintains every calculator on freecalculators.pro from Malta, with a focus on tools that are fast, free and show their working. This vig calculator uses the standard multiplicative de-vig method and the figures are verified for accuracy. It is provided for education, not as betting or financial advice. Please bet responsibly. Page last updated June 2026.