Hold calculator
Measure the overround across a two-way market using the best available price on each side.
4.55%
At −110 / −110 the book keeps $4.55 of every $100 bet across both sides.
- Book percentage
- 104.76%
- Side A implied
- 52.38%
- Side B implied
- 52.38%
- Overround
- 4.76%
Use both sides of one market. The lower the hold, the less the book keeps.
How to use the hold calculator
Sportsbook hold is the share of the money bet across both sides of a two-way market that the book keeps when the action is balanced. A lower hold generally means a more bettor-friendly market. The overround, how far the combined implied probabilities sit above 100%, shows as a figure under the result.
- 1Enter the price for each side of a two-way market.
- 2Review the combined implied probability.
- 3Use the hold percentage to compare market quality across books.
Formula and assumptions
Hold = 1 - 1 / (implied probability of side A + implied probability of side B). Overround = implied probability of side A + implied probability of side B - 100%.
The result describes the theoretical market margin at the entered prices. Actual sportsbook revenue depends on bet distribution and outcomes.
The math in full, with worked examples: How to remove the vig: no-vig fair odds explained
Questions
Answers about this free hold calculator, sports betting odds, payouts, and the math behind each result.
- No. Hold is the theoretical pricing margin, while actual profit depends on wager volume, liability, and results.
- It means the book keeps $4 of every $100 bet across both sides when the action is balanced. The prices' implied probabilities then total about 104.2%, an overround of 4.2 points above a fair 100% market.