Vig Calculator
Enter odds for both sides of a market. See the vig, no-vig fair odds, and the true implied probabilities.
Market Odds
Vig (Juice)
4.76%
Total implied probability: 104.76%
The book prices this market at 104.8%. The 4.8% over 100 is their cut.
Fair Odds (No Vig)
| Side 1 | Side 2 | |
|---|---|---|
| Book odds | -110 | -110 |
| Fair odds | +100 | +100 |
| Fair decimal | 2.000 | 2.000 |
| True probability | 50.00% | 50.00% |
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Start Your Free TrialWhat Is Vig (Juice)?
The vig (also called juice, margin, or overround) is how sportsbooks make money. On a fair coin flip, both sides would be priced at +100 (2.00 decimal). But the book prices both sides at -110 instead, which builds in a 4.76% margin. That margin is the vig. You're paying it every time you place a bet.
The vig varies by market and by book. A standard -110/-110 spread market carries about 4.76% vig. But some markets, especially player props and exotics, can carry 8-15% vig or more. Knowing the vig tells you exactly how much of a tax the book is charging on each wager.
How the Vig Is Calculated
The vig is the amount by which the implied probabilities on all outcomes exceed 100%. In a two-sided market, convert both odds to implied probability and add them up. If the total is 104.76%, the vig is 4.76%.
Side 1: -110 → implied probability 52.38%
Side 2: -110 → implied probability 52.38%
Total: 52.38% + 52.38% = 104.76%
Vig: 104.76% − 100% = 4.76%
Why No-Vig Odds Matter
The no-vig (or fair) odds strip out the sportsbook's margin and show what the line would be in a perfectly efficient market. This is the baseline for value betting. If you think a team has a 55% chance to win, and the no-vig implied probability is 50%, you're looking at a potential edge. If the no-vig probability is already 55%, there's no value. You're just paying the vig for a fair price.
Vig by Market Type
Not all lines carry the same juice. Here's what you'll typically see:
| Market | Typical Odds | Typical Vig |
|---|---|---|
| Spreads / Totals | -110 / -110 | 4.5–5% |
| Moneylines | Varies | 3–6% |
| Player Props | -115 / -115 | 5–12% |
| Futures | Varies widely | 10–30% |
Reducing the Vig You Pay
Two strategies: shop for the best line and use reduced-juice books. Shopping odds across multiple sportsbooks means you're taking the best price on each side instead of paying whatever one book charges. Some books (like Pinnacle or Circa) offer lower vig as a business model. Going from -110/-110 (4.76% vig) to -105/-105 (2.44% vig) cuts your tax in half.
Frequently Asked Questions
What's the standard vig on a sports bet?
The industry standard for spreads and totals is -110 on both sides, which works out to about 4.76% vig. Moneylines vary depending on how lopsided the matchup is. Player props and futures typically carry higher vig, sometimes 8-15% or more.
Is vig the same as juice?
Yes. Vig, juice, margin, and overround all refer to the same thing: the sportsbook's built-in profit on a market. “Vig” comes from “vigorish.” “Juice” is more common in casual conversation. “Overround” is the term used in international markets.
How does vig affect my long-term results?
The vig is a constant drag on your returns. At -110/-110, you need to win 52.38% of your bets just to break even. Every percentage point of vig makes it harder to be profitable. Reducing the vig you pay (by line shopping or using reduced-juice books) directly improves your bottom line.
Can the vig be negative?
In theory, yes. That's an arbitrage opportunity. If the combined implied probabilities total less than 100%, you can bet both sides and guarantee profit. In practice this is rare and usually corrected quickly by the books. Our odds converter can help you check implied probabilities across formats.
Why do player props have higher vig?
Player prop markets are harder for sportsbooks to price accurately, so they build in more margin as protection. There's less betting volume on props compared to spreads, so the book can't rely on balancing both sides. The extra vig compensates for their pricing uncertainty, but it also means there's more mispricing for sharp bettors to find.
Related Tools
Low-vig lines hide in plain sight across different books. Browse player props to see where the value is, or read our guide to line shopping.