Devig Calculator
Remove the bookmaker's vig from a two-way market to reveal fair odds and probabilities.
Input
Over/Under, Favorite/Underdog — any 2-way market.
Market
Combined Probability
Margin (Vig)
Implied A
Implied B
Enter both sides' odds to see the market summary.
Fair (True) Odds —
| Outcome | Bookie Odds | Implied % | True Odds | True % |
|---|---|---|---|---|
| Side A | ||||
| Side B |
Sum of true probabilities:
Your Odds (optional)
Enter the odds your book is offering on either side to see CLV and expected ROI vs the fair price.
CLV
Expected ROI