De-vig calculator (fair odds and hold)
Take the vig out of a two-sided price to get the fair chance and the book's hold.
Result
- Side A fair chance
- 58.0%
- Side A fair odds
- -138
- Side B fair chance
- 42.0%
- Side B fair odds
- +138
- Book's hold
- 3.36%
Pro fills in the fair price from the sharp market for every bet at your books, and finds the best places to use a boost tonight. See Pro
Get this math on every promo at your books
Parity Odds Pro prices every bet, prop, and promo against the fair price, every few minutes. A research tool, not a sportsbook.
How it works
A book's two prices add up to more than 100% (for example -110 and -110 is 52.4% + 52.4%). The extra is the book's margin, called the vig or hold.
Removing it proportionally gives each side's fair chance. Do this with a sharp book's prices and you have a strong estimate of the true odds to compare your book against.
More detail: How to devig a one-sided prop, like anytime touchdown scorer, What de-vigging means, and why we use sharp books.