The same math Sooth runs on every price, as calculators. Nothing here predicts anything — it converts, strips margin, and shows what the numbers already say.
Enter both sides of a two-way market from one book. The margin is removed by normalising the implied probabilities, giving the price the book thinks is fair.
Type any one of the three; the others fill in. Implied probability includes the vig — it's what the price charges, not the true chance.
Did your bet beat the close? Pick any 2023–25 NFL game, enter the price you got, and compare it against the consensus close across 10–16 books.
Both sides of a market at one book. Hold is the margin baked into the pair — what the book keeps if it balances its risk. Compare books before you bet.
Analysis only — no wagers taken, no picks sold. 21+, where lawful. If gambling is causing harm, call 1-800-522-4700, 24/7.