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Free calculator
No-vig fair odds calculator
Remove a book's margin from its odds to get the fair price, with no house edge.
Enter every side of one market at one book.
Enter American (-110, +150) or decimal (2.50) odds.
Your numbers
Results
Fair A · 50.00%
-100
Fair B · 50.00%
-100
Hold (vig)
+4.76%
How it works
Every book bakes a margin into its prices, so the implied probabilities add up to more than 100%. Removing that margin gives the fair odds: what the bet would pay with no house edge. This calculator removes it in proportion to each side's chance.
Example
−110 on both sides implies 52.38% + 52.38% = 104.76%. Take out the 4.76% hold and each side is 50%, fair odds of even money.
Find live +EV bets
Live +EV bets are part of Antic Pro.
Keep going
- Glossary
No-vig price
The fair price for each side once the book's margin is removed from the market.
- Glossary
Vig
The margin a book builds into its prices. It is why the two sides of a market add up to more than 100%.
- Antic Pro tool
Positive EV
Bets priced above their no-vig fair odds. The same math, run live on every book.
Calculators show math, not advice. Antic never places bets. Bet only where it is legal for you.