Enter both sides of a 2-outcome bet and we will calculate the devigged odds.
Enter both sides of a 2-outcome bet and we will calculate the devigged odds.
Every sportsbook builds a margin into their odds called the "vig" (or "juice"). This is their profit margin — it's why the implied probabilities of all outcomes at a single book always add up to more than 100%. Devigging is the process of removing this margin to reveal the true fair odds and implied probabilities.
SmartStake trusts sharp sportsbooks like Pinnacle as a benchmark for sharper lines. By devigging a sharp book's odds, you can estimate an implied probability of an outcome. You then compare these estimates against other sportsbooks to look for candidate positive expected value (+EV) bets — situations where a book may be offering odds that differ from the estimated true odds. When picking a sharp book, you should review its record for yourself and pick one you trust.
This calculator supports multiple devigging methods including multiplicative (equal distribution of vig across outcomes) and power method (which accounts for favorite-longshot bias). Learn more in our Complete Guide to Devigging. Once you understand fair odds, use our Expected Value Calculator to size your bets.