Half Point Calculator
Calculate the true cost of buying or selling half points on spreads and totals in implied probability terms.
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What Is Buying / Selling Half Points?
Many sportsbooks let you buy or sell half points on spreads and totals. Buying a half point moves the line in your favor (e.g., -3.5 to -3) but at worse odds. Selling moves it against you for better odds.
Is It Worth It?
This calculator shows you the cost of the half point in implied probability terms. Key numbers in NFL (3, 7, 10) are worth more than non-key numbers. If the probability cost is small relative to how much the half point matters, it may be a smart buy.
Key Numbers
In NFL, games most commonly land on margins of 3 and 7 points. Buying off these key numbers (e.g., moving from -3 to -2.5) is generally more valuable than buying off non-key numbers.
Get the Edge with Optimal Bet
Our app scans sportsbook pricing across the market to expose inefficiencies and uncover +EV edges. We compare odds, surface high-value opportunities, and deliver precision alerts so you can move with conviction.
