Hold / Vig Calculator
Enter American odds for each side to calculate the bookmaker's hold, overround, and fair no-vig lines.
Market odds
Pick market type, enter American odds for each side. Results update as you type.
| Side 1 | Side 2 |
|---|---|
Total implied
104.76%
Overround
4.76%
Vig %
4.55%
| Outcome | Fair probability | Fair American |
|---|---|---|
| Side 1 | 50.00% | -100 |
| Side 2 | 50.00% | -100 |
Frequently Asked Questions
What is the hold or vig in sports betting?
The hold (also called vig, vigorish, or juice) is the margin a sportsbook builds into its odds. It ensures the book profits regardless of the outcome. A standard -110/-110 two-way market has roughly a 4.5% hold.
How is overround calculated?
Overround is the total implied probability of all outcomes minus 100%. For example, if a two-way market implies 52.4% and 52.4%, the total is 104.8% and the overround is 4.8%. The higher the overround, the worse the odds for bettors.
What is a fair line?
A fair line (or no-vig line) is what the odds would be if the sportsbook charged zero margin. Removing the vig gives you the true implied probabilities, which you can use to evaluate whether a bet has positive expected value.
When should I use the 3-way option?
Use the 3-way option for markets with three possible outcomes, such as soccer match result (home/draw/away), first-half result, or any market where a draw or tie is a separate settled outcome.
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