No-Vig (Fair Odds) Calculator
Remove the vig from a two-way market to get fair odds and the true implied probability.
How it works
Each price implies a probability (for −110 that's 110/210 = 52.4%). The two sides add up to more than 100%; the extra is the vig (hold). The multiplicative method divides each side by the total so they sum to 100%, then converts back to odds. Use the fair odds from a sharp book like Pinnacle to judge whether another book's price is +EV.
For information only. Math can't make a losing bet win. 21+.
Other calculators: Expected Value (EV) · Parlay · Kelly Criterion