No-Vig Calculator
How To Use This Calculator
Remove the bookmaker's margin to find the true "fair" odds and probability. This helps you identify value bets by comparing against your sportsbook's odds.
Input odds for both sides from a sharp book (like Pinnacle).
We recommend "Worst Case" for the most conservative estimate.
The odds offered by your sportsbook for the bet you want to place.
See fair odds, EV%, and recommended bet size.
What is the Vig (Juice)?
The vig (also called "juice" or "house edge") is the bookmaker's commission built into the odds. It's how sportsbooks guarantee profit regardless of the outcome.
When you see -110 on both sides of a bet, the implied probabilities add up to more than 100%. That difference is the vig - typically 4-10% at most sportsbooks.
Devigging Methods Explained
Distributes vig proportionally to each side's implied probability. Simple and widely used, but may underestimate longshot probabilities.
Divides the vig equally between both sides. Better accounts for favorite-longshot bias but can overcorrect in some situations.
Uses mathematical optimization to find probabilities. Keeps values in valid range but may over-adjust for longshots.
Uses the lowest probability from all methods - the most conservative estimate for calculating your edge. Best for avoiding false positives when finding +EV bets.
Devigging Methods Comparison
| Method | Best For | Accuracy | Bias Handling |
|---|---|---|---|
| Multiplicative | Even-money markets | Good for balanced lines | Underestimates longshot probability |
| Additive | Markets with favorite-longshot bias | Better for lopsided odds | Accounts for bias but can overcorrect |
| Power | Academic analysis | Often considered most robust | Nonlinear adjustment, may over-adjust longshots |
| Worst Case | Finding +EV bets (recommended) | Most conservative estimate | Minimizes false positives across all methods |
Step-by-Step Worked Example
Pinnacle has an NFL game at -180 / +155.Your sportsbook offers the favorite at -180. What are the fair odds?
Fair favorite odds: 1 / 0.621 = -164.If your book offers -180, you have an edge because -180 is better than the fair odds of -164.
No-Vig Odds by Sport
Vig varies significantly across sports, markets, and sportsbooks. Understanding where books embed the most margin helps you identify where the biggest edges hide.
NFL spreads and totals are the most competitive markets in sports betting, with vig typically ranging from 2% to 5% at major sportsbooks. These markets attract the highest volume, forcing books to keep margins tight. Player props and alternate lines carry substantially more vig, often 8% to 15%, because lower liquidity lets books widen their margin without losing action.
NBA spreads and totals follow a similar pattern to NFL, with vig around 3% to 5% on main markets. Player props are where NBA vig gets aggressive. Books routinely embed 10% to 20% margin on player prop markets like points, rebounds, and assists, particularly for less popular players or combined stat lines.
MLB is a moneyline-driven sport, which changes how vig behaves. On moneylines, vig scales with the size of the favorite: a -110/-110 line carries about 4.5% vig, but a -200/+170 line can carry 6% or more because books shade the favorite side. Run lines (1.5-run spreads) typically carry 3% to 6% vig, similar to NFL and NBA spreads.
Three-way markets (home/draw/away) carry noticeably higher vig than two-way markets, typically 5% to 10%. The draw outcome is where books hide extra margin because bettors are less likely to bet the draw, giving books room to inflate the price. Asian handicap and over/under markets in soccer tend to be sharper, with vig closer to 3% to 5%.
Tennis is a two-outcome sport with generally tight margins on match winners, typically 3% to 5% at most books. The market is relatively efficient because outcomes are binary and heavily modeled. Set betting and game handicaps carry more vig, usually 5% to 8%, following the same pattern of lower liquidity leading to wider margins.
| Sport | Main Market | Typical Vig | Props / Alt Lines | Typical Vig |
|---|---|---|---|---|
| NFL | Spread / Total | 2% - 5% | Player Props | 8% - 15% |
| NBA | Spread / Total | 3% - 5% | Player Props | 10% - 20% |
| MLB | Moneyline | 4% - 7% | Run Line | 3% - 6% |
| Soccer | 3-Way (1X2) | 5% - 10% | Asian Handicap | 3% - 5% |
| Tennis | Match Winner | 3% - 5% | Set Betting | 5% - 8% |
The pattern is consistent: high-volume, two-outcome markets have the lowest vig, while niche markets with more outcomes and less betting volume carry higher margins.
How to Use No-Vig Odds to Find +EV Bets
Devigging odds is not just an academic exercise. It is the foundation of how professional bettors find profitable wagers. Here is the practical workflow.
Start with odds from a market-making book like Pinnacle or Circa. These books accept high limits, price their lines using sophisticated models, and attract the sharpest bettors. Their odds, after removing vig, are the closest publicly available approximation of true probabilities.
Run the sharp book's odds through this no-vig calculator. For a two-way market, this converts each side to implied probability, sums them (which exceeds 100% due to vig), and normalizes back to 100%. The result is your estimate of each outcome's true probability.
Check what DraftKings, FanDuel, BetMGM, or your target sportsbook is offering on the same market. Convert their odds to implied probability for direct comparison. You are looking for spots where the retail book's implied probability is lower than the fair probability you calculated.
For example, if your fair probability for Team A is 52.04% and FanDuel offers Team A at -105 (implied 51.22%), you are getting 52.04% true probability at a price that only implies 51.22%. That gap is your edge. Over hundreds of bets, that edge compounds into consistent profit.
Key principle: Sharp books set the most accurate lines. Any time a retail book offers a better price than the devigged sharp line, that is a +EV opportunity.
No-Vig Calculator for Three-Way Markets
Three-way markets, most commonly soccer match results (home/draw/away), require special attention when devigging. The math is the same in principle but the extra outcome changes the dynamics.
Every outcome in a market gives the bookmaker another place to embed margin. In a two-way market, the book distributes vig across two prices. In a three-way market, it distributes across three, which means the total overround is typically higher. Sportsbooks also exploit the draw outcome specifically: casual bettors rarely bet draws, so books can inflate the draw price without losing significant action, effectively hiding extra margin there.
Consider a Premier League match with these odds:
Using the multiplicative method, divide each implied probability by the total:
Now each probability sums to exactly 100%, and you have fair odds for all three outcomes.
For three-way markets, the additive or worst-case method often outperforms the standard multiplicative method. These approaches better account for the fact that vig is not distributed equally across all outcomes, particularly the draw, which tends to absorb a disproportionate share of the margin. Use the worst-case method for the most conservative edge estimate in three-way markets.
No-Vig vs Fair Odds vs True Odds
These three terms are often used interchangeably, but they have distinct meanings. True odds represent the actual, objective probability of an outcome occurring. No one knows the true odds of any sporting event because they depend on countless variables that cannot be perfectly measured. Fair odds are the best available estimate of true odds, calculated by removing the bookmaker's margin from a sharp line. No-vig odds are synonymous with fair odds in practice, referring specifically to the output of a devigging calculation. The distinction worth remembering: fair odds and no-vig odds are the same thing (a market-derived estimate), while true odds are a theoretical concept that market prices approximate but never perfectly capture. For practical betting purposes, devigged Pinnacle odds are the closest proxy to true odds that bettors can access.
Common Mistakes to Avoid
Using odds from high-margin books (like DraftKings or FanDuel) to devig gives inaccurate fair probabilities. Always use sharp book odds with low margins (1-3%).
The multiplicative method underestimates longshot probabilities. For lopsided lines, consider additive or worst-case methods for more accurate results.
Sharp book odds move quickly. If you devig from odds that are minutes old, the fair probability may have already shifted. Always use the most current lines.
Fair odds represent market probability, not certainty. A 60% fair probability means you'll still lose 40% of the time. Always combine with proper bankroll management.
Frequently Asked Questions
Why should I use sharp book odds?
Sharp books like Pinnacle and Circa Sports have lower margins (1-3%) and more accurate lines because they accept bets from professional bettors. Their odds reflect the true market probability better than recreational sportsbooks with 5-10% margins.
Which devig method is most accurate?
No method is perfect for all situations. "Worst Case" is recommended because it gives you the most conservative edge estimate, reducing false positives. For academic accuracy, Power method is often considered most robust.
How do I find Pinnacle odds?
Our Odds Comparison tool shows odds from Pinnacle alongside 400+ other sportsbooks. You can also check Pinnacle directly if you have access, or use odds comparison sites.
What's the difference between vig and margin?
They're the same thing - different names for the bookmaker's built-in profit. "Vig" (short for vigorish) and "juice" are common in American betting, while "margin" and "overround" are used internationally.
Can you devig three-way odds (like soccer)?
Yes, the same devigging methods work for three-way markets like soccer match result (home/draw/away). The vig is distributed across three outcomes instead of two. The mathematical principles are identical.
What is the typical vig percentage at US sportsbooks?
Most US recreational sportsbooks charge 4-10% vig on standard markets. The standard -110/-110 line carries about 4.8% vig. Prop bets and parlays often have much higher margins (10-20%). Sharp books like Pinnacle operate with 1-3% margins.
Why do different devigging methods give different results?
Each method makes different assumptions about how bookmakers distribute their margin. Multiplicative assumes proportional distribution, additive assumes equal distribution, and power uses nonlinear optimization. The differences are larger when odds are lopsided (heavy favorite vs. longshot).
How do I use a no-vig calculator with FanDuel or DraftKings?
You do not input FanDuel or DraftKings odds into the no-vig calculator. Instead, input odds from a sharp book like Pinnacle to calculate the fair odds. Then compare those fair odds against what FanDuel or DraftKings is offering. If the retail book's price is better than the devigged fair price, you have found a +EV opportunity.
What is the difference between no-vig odds and closing line value?
No-vig odds remove the bookmaker's margin to estimate the true probability at a specific point in time. Closing line value (CLV) measures whether you bet at better odds than the final closing line. They are related but distinct: no-vig odds help you find value before you bet, while CLV tells you after the fact whether your price was good. Consistently beating the no-vig closing line is the single best predictor of long-term profitability.
Can I use a no-vig calculator for parlays?
Yes, but you need to devig each leg individually. Calculate the fair probability for every selection in your parlay, then multiply those fair probabilities together to get the true combined probability. Compare that against the parlay payout your sportsbook offers. In practice, most parlays are significantly negative EV because the book compounds its margin across every leg.
How do I read no-vig odds in decimal format?
Decimal no-vig odds represent the fair payout multiplier with zero bookmaker margin. A fair decimal price of 2.00 means the true probability is exactly 50% (1 divided by 2.00). A fair price of 3.50 means the true probability is 28.57%. The key difference from raw sportsbook odds: no-vig decimal odds for a market will always sum to exactly 1.00 when converted to implied probabilities.
Why is the vig higher on player props than on spreads?
Three factors drive higher vig on player props. First, liquidity is lower because fewer people bet on a specific player's rebounds than on the game spread. Second, props are harder to model accurately, and wider margins protect the book against uncertainty. Third, books know that props attract recreational bettors who are less price-sensitive, so the book can charge more without losing volume.
How much vig do sharp books like Pinnacle charge?
Pinnacle typically charges 1.5% to 3% vig on major two-way markets like NFL spreads, NBA totals, and tennis match winners. On less liquid markets, their vig can reach 3% to 5%. For comparison, retail books like DraftKings and FanDuel charge 4% to 5% on main markets and 10% to 20% on props. This gap is exactly why devigging Pinnacle's lines is so effective.
Pro Tip: Use Sharp Book Lines
For best results, always use odds from sharp books like Pinnacle or Circa Sports as your devigging source. These books have lower margins and more accurate lines, giving you the most reliable fair odds estimate. Never devig from recreational sportsbooks with high margins.