Hold Calculator
How much the book keeps on a market.
Enter both sides of a two-way market to see the book’s hold (theoretical margin).
Hold96.25%
Implied prob · A98.13%
Implied prob · B98.13%
Total implied196.25%
What is the hold?
The hold is the book’s theoretical margin on a market — the amount they keep if they balance action perfectly. A standard −110/−110 market holds about 4.5%. Lower hold means a fairer market; comparing holds across books tells you where you’re paying the least juice.
Sharp does this automatically across 100+ books — see the Odds & Markets.
More Betting Math calculators
Sharp automates every one of these across 100+ books — live.
Try Sharp free