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Vig & Hold
Measure the margin baked into a market.
Vig & Hold Calculator
Measure the margin a book is charging you.
Enter both sides' decimal odds to measure the margin.
How to use it
Enter every price in a market as decimal odds. The calculator sums the implied probabilities and returns the vig (overround) and the book's hold on the market.
What it means
The hold is the margin a bookmaker keeps when a market is balanced: the amount by which the implied probabilities exceed 100%. A lower hold means a sharper, better-value market; a higher hold means more margin baked into the prices.
For education only, not financial advice. 18+. Gamble responsibly. Past performance does not guarantee future results.