Remove the vig and find the fair price
This no vig calculator strips the bookmaker margin out of a market and returns the fair odds behind it.
Enter every price in the market. The calculator adds up the implied probabilities, divides out the excess above 100% and converts what is left back into odds. Those are the fair, or no-vig, odds. Results update as you type.
Formula and worked example
Implied probability = 1 / Decimal odds
For moneyline: negative odds = odds / (odds + 100), positive odds = 100 / (odds + 100)
Total market probability = Sum of every outcome's implied probability
Fair probability = Implied probability / Total market probability
Fair odds = 1 / Fair probability
A two-way moneyline at -110 and -110 implies 52.4% and 52.4%. Those add up to 104.8%, so the book hold is 4.8%. Dividing each by 104.8% gives a fair probability of 50% on both sides, which converts to fair odds of +100 / +100.
The same market in decimal is 1.91 and 1.91, and the fair price is 2.00 on each side.
Three-way markets and why most calculators get them wrong
Almost every no-vig calculator accepts exactly two outcomes, because the American sports they were built for do not have a draw. Football does, and a three-way market cannot be devigged two prices at a time: the margin is spread across all three, so removing it needs all three.
Take a Copa Libertadores market priced 3.06 on the home side, 3.20 on the draw and 2.58 on the away side. Those imply 32.7%, 31.3% and 38.8%, totalling 102.8% for a hold of 2.8%. Dividing each by 102.8% gives fair probabilities of 31.8%, 30.4% and 37.7%, or fair odds of 3.15, 3.29 and 2.65.
This calculator takes two to six outcomes, so three-way football, and markets with more selections than that, devig correctly rather than needing to be forced into a two-way shape.
Reading the result
Book hold is the amount by which the market's implied probabilities exceed 100%. It is the bookmaker's theoretical margin on the market as a whole, not on any single outcome.
Fair odds are always longer than the odds offered, because the margin has been taken out. If you can find a price longer than the fair odds at another book, that book is pricing the outcome as less likely than this market does. That is a starting point for comparison, not a conclusion.
Enter every outcome. A market devigged with a selection missing will report a hold that is too low and fair odds that are too short. A negative hold usually means the prices came from different books, which is an arbitrage rather than a single market.
Limits and responsible use
The no-vig split is a proportional estimate. It does not model information, bias or execution risk. Settlement and void rules can also change the realised result. See Gambling Commission LCCP 4.2.6.
Set a spending limit before gambling and do not chase losses. Read GambleAware's advice and our responsible gambling guidance.
Related tools and guides
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Frequently asked questions
What is a no-vig calculator?
A no-vig calculator removes the bookmaker's margin from a market. Fair probability = implied probability divided by the total market probability. Convert that fair probability back to a price and you have the no-vig, or fair, odds.
How do you remove the vig from odds?
Convert every price in the market to an implied probability, add them together, then divide each one by that total so they sum to 100%. A -110 / -110 market implies 52.4% and 52.4%, which totals 104.8%. Dividing each by 104.8% gives 50% and 50%, or +100 / +100 in moneyline terms.
What is a normal hold percentage?
On a two-way moneyline, roughly 4% to 5% is standard, and sharper books run nearer 2%. Three-way football markets usually carry more because there are three prices to pad. The hold is the amount by which the market's implied probabilities exceed 100%.
Why are fair odds different from the odds I can bet?
Fair odds are what the market implies once the margin is stripped out. No bookmaker offers them, because the margin is how the book makes money. Fair odds are a reference point for judging whether a price you can actually bet is generous or short.
Does this work for three-way markets?
Yes. This calculator handles two to six outcomes, so a football market with home, draw and away devigs correctly. Most no-vig calculators only accept two outcomes because American sports rarely have a draw.
Do no-vig odds mean a bet is good?
No. Removing the margin tells you what the market believes once the book's cut is taken out. It does not tell you whether the market is right. A price that beats the fair odds is only value if your own view of the probability is better than the market's.
Sources
- Gambling Commission, LCCP condition 4.2.6. Current code accessed 30 July 2026.
- GambleAware, Advice to consider if you're gambling. Accessed 30 July 2026.