UnjuicedHalf-Point Value Calculator
Estimate the fair price after buying or selling half a point, with extra weight on key numbers.
Line movement
Estimated fair price
Adjusted odds
-132
Base probability
52.38%
Adjusted probability
56.88%
Half-point impact
4.50%
Key-number weights are league-level estimates. Compare the result with alternate lines in the live market before placing a bet.
How to use the Half-Point Value
Half-point value depends on how often games land on the number being crossed. Key football margins such as 3 and 7 usually carry more value than nearby numbers.
- 1Enter the current spread and price.
- 2Choose whether you are buying or selling a half point.
- 3Compare the estimated fair price with the sportsbook's offered adjustment.
Formula and assumptions
Adjusted win probability = original probability plus or minus the estimated push frequency crossed by the half point.
The model uses broad historical estimates and cannot capture every league, season, total, team, or market condition.
Half-Point Value calculator FAQ
Answers about this free half-point value calculator, sports betting odds, payouts, and the math behind each result.
Why are 3 and 7 key numbers?
Football scoring makes final margins of 3 and 7 more common than many nearby margins.
Is buying a half point always worth it?
No. It is useful only when the value of the crossed number is greater than the extra price charged.