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Remove the sportsbook's vig to find the fair odds and true win probability of any market. Enter the odds for each outcome - American or decimal, 2 or 3-way - and we strip out the juice instantly.
Remove the bookmaker's vig to reveal the fair odds and true win probability of each outcome.
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Get StartedEstimated typical sports margin by book - illustrative industry ranges, not Spindex-measured.
A no-vig calculator (also called a vig calculator, no-vig fair odds calculator, or de-vig tool) is one of the most important tools in a sharp bettor's kit. It takes the odds a sportsbook is offering, removes the built-in margin, and reveals the "fair" odds and true win probability of each outcome - the numbers you actually need to decide whether a bet is worth making.
The vig - short for vigorish, also known as the juice, margin, or hold - is the commission a sportsbook charges on every market. It's why a coin-flip market isn't priced at +100 / +100 but at -110 / -110. If you convert each side of a market to an implied probability and add them together, a fair market would total exactly 100%. A real market totals more - often 102% to 108% - and that overage is the vig the book keeps.
Removing the vig takes three steps. First, convert each outcome's odds to an implied probability. Second, add those probabilities together - the total will be above 100%. Third, divide each outcome's probability by that total so they sum to exactly 100%. Converting those rescaled, vig-free probabilities back into odds gives you the no-vig fair odds. This is the standard "multiplicative" de-vig method, and it's what this calculator runs automatically for two-way and three-way markets.
For example, a market at -110 / -110 implies 52.38% on each side, or 104.76% combined. Strip out the 4.76% vig and each side's fair probability becomes 50.00%, for fair odds of +100. A market at -180 / +155 implies 64.29% and 39.22% (103.51% total); de-vigged, that's 62.11% and 37.89%, or fair odds of -163.93 and +163.93.
The reason no-vig odds matter is value. The fair odds from a sharp, low-margin book (the kind that sets the market) are the closest thing to an outcome's true price. If you can find a different sportsbook offering longer odds than those fair odds, you've found a positive expected value (+EV) bet - one that's mathematically profitable over the long run. Sharp bettors devig the sharp line, then shop for books offering a better number.
Pick American or decimal odds with the toggle, enter the price for each outcome, and the calculator instantly shows the no-vig win probability and fair odds for every side, plus the market's total vig. Use "Add outcome" for three-way markets like soccer (home / draw / away). It's free, runs entirely in your browser, and works for moneylines, spreads, totals, and props.
A no-vig calculator removes the sportsbook's built-in margin - the vig, juice, or hold - from a set of odds and returns the fair odds and true win probability for each outcome. In a fair market the implied probabilities of every outcome add up to exactly 100%; with the vig included they add up to more than 100%, and the calculator strips that excess back out.
Convert each outcome's odds to implied probability, add them up (the total will be over 100%), then divide each outcome's probability by that total so they sum to exactly 100%. Convert those fair probabilities back into odds and you have the no-vig (fair) odds. This is the standard multiplicative de-vig method most sharp bettors use.
No-vig fair odds are the price of a bet with the bookmaker's margin removed - a sharp estimate of an outcome's true probability and price. They represent what the odds would be if the sportsbook took no cut at all.
Take the no-vig fair odds from a sharp market and compare them to the price another book is offering. If a book's odds are longer (a bigger payout) than the fair odds, the bet has positive expected value (+EV) - the core of profitable betting.
A standard two-way market priced at -110 / -110 carries about a 4.5% vig. Vig is tighter on major markets and wider on props and parlays. This calculator shows the exact vig for whatever odds you enter.
Yes. Add a third outcome (for example a soccer match with home, draw, and away) and the calculator de-vigs all three at once, returning fair odds and probability for each.
18+ only · Gamble responsibly · Tools are for informational purposes only.