No-Vig Odds Calculator

Strip sportsbook juice from a two-way market. Returns the fair (no-vig) probability and odds for each side.

Side A American odds Side B American odds

Side A — Fair

50.00%

-100

Side B — Fair

50.00%

-100

Vig (sportsbook juice)

4.76%

How devigging works

Sportsbooks bake their margin (the "vig" or "juice") into both sides of every market. To get to the book's true probability estimate, you sum the implied probabilities of both sides — they sum to more than 1 because of the vig — then normalize each by the total. The result is the "no-vig" or "fair" probability.

By Anton Volkov — The Quant.