Devig Calculator
Remove the vig from bookmaker odds to find true fair probabilities.
Enter Odds (American)
How to Use
Enter the American odds for each outcome of a market (e.g., -110 / -110 for a standard spread). The calculator removes the bookmaker's vig using the multiplicative method to show you the true fair probability and what the odds would be at a fair (no-vig) market. Use these fair odds to compare against other books and find +EV opportunities.