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Vig calculator: sportsbook vig & no-vig odds
Enter the American odds of every outcome in one market. The calculator shows how much vig the sportsbook builds into the prices, what share of the money wagered the market pays back, and what the odds would be with the vig taken out.
This market
- Implied probabilities in total
- 104.76%
- Payout
- 95.45%
No-vig odds
| # | Odds | Implied | No-vig probability | No-vig odds |
|---|---|---|---|---|
| Outcome 1 | −110 | 52.4% | 50.0% | +100 |
| Outcome 2 | −110 | 52.4% | 50.0% | +100 |
How to read your result
Vig (the margin, or juice) is how far the implied probabilities of all outcomes add up above 100%. A coin flip priced +100 on both sides adds up to exactly 100%; the same flip at −110 on both sides adds up to 104.8%, and the extra 4.8 points are the vig.
Payout is the same prices seen from your side: 100% divided by that total. It is the share of the money wagered that the market returns to bettors on average, if the no-vig odds are right. No-vig odds are the prices with the vig taken out, one per outcome, and the no-vig probability next to them is what those odds stand for.
Compare a market with the same market at other sportsbooks rather than with a different market: a three-way soccer moneyline or a long futures board has more outcomes to spread the vig over than a two-way total. A total below 100% never comes from one sportsbook's market; it means the prices were taken from different sportsbooks, or one was typed wrong.
How the calculator works
vig = 1/odds₁ + 1/odds₂ + … + 1/oddsₙ − 1 (decimal odds)
payout = 100% ÷ (1/odds₁ + 1/odds₂ + … + 1/oddsₙ)
no-vig odds = 1 ÷ no-vig probability
The calculator converts American odds to decimal first (odds converter). The vig and the payout follow from the odds alone. No-vig odds need one more decision: how the sportsbook spread the vig across the outcomes. There are three methods, chosen with the switch under the odds:
- Multiplicative
- Each implied probability is divided by their total, so every outcome gives up the same share. It is the standard method and the one behind our value bets and the odds methodology.
- Power
- Each implied probability is raised to the same power, chosen so that the results add up to 100%. Long shots give up more than favorites, in line with the favorite–long-shot bias that betting research has found in many markets.
- Shin
- Hyun Song Shin's model (1993) assumes that part of the money comes from bettors with inside information and solves for that share. Like the power method it takes more from long shots. When the prices carry no vig it gives the multiplicative answer.
The calculation runs in your browser and the odds you type are not sent anywhere. A market can have from 2 to 20 outcomes: enough for a moneyline, a total, a spread or a short futures list.
Worked example
Take a soccer moneyline priced 2.10 for the home win, 3.40 for the draw and 3.50 for the away win in decimal odds, the market from our odds methodology. The home price implies 47.6%. The three implied probabilities add up to 105.6%, so the vig is 5.6% and the payout 94.7%.
With the multiplicative method the home win's no-vig probability is 45.1%, and the no-vig odds are 2.22 for the home win, 3.59 for the draw and 3.70 for the away win. A price above the no-vig odds at another sportsbook beats the market's own estimate; a price below it is the vig at work.
Where the three methods disagree
On a balanced market the three methods give nearly the same answer. They part company when a heavy favorite meets long shots. In a market priced 1.25, 5.50 and 13.00 in decimal odds (vig 5.9%), the long shot's no-vig odds are 13.76 with the multiplicative method, 16.45 with the power method and 16.21 with Shin's.
That gap matters when you judge long-shot prices: the multiplicative method assumes the long shot carries only its proportional share of the vig, so a price that looks close to fair may not be. If the market has a clear favorite, check the other two methods before you read anything into a long-shot price.
Stake tax and fees abroad
US bettors pay no tax on the wager itself, but some European countries take a cut of every stake: in Poland 12% of every stake is tax, and in Croatia operators deduct a 5% fee. Choose the country to see the payout after that deduction: the example market's 94.7% becomes 83.3% in Poland and 90.0% in Croatia. The vig and the no-vig odds stay the same.
Tax on winnings depends on how much you win and where you live, so it is not part of the payout here; the bet calculator shows the payout and profit of a straight bet or a parlay.
Questions
- What is the vig?
- The amount by which the implied probabilities of a market's outcomes add up above 100%. It is built into the odds, and it is how a sportsbook earns whatever the result.
- How do I calculate the vig from odds?
- Convert each price to decimal odds, add up 1 ÷ odds for every outcome and subtract 1. For odds of 2.10, 3.40 and 3.50 the total is 105.6%, so the vig is 5.6%.
- What is the difference between vig and payout?
- They describe the same prices from two sides. Payout is 100% divided by the sum of implied probabilities, so a vig of 5.6% is a payout of 94.7%.
- Which method should I use?
- The multiplicative method for a quick, standard answer and for evenly matched sides; the power or Shin method when one side is a heavy favorite and the long shots are what you are pricing.