In sports betting, speed kills for pregame and live markets. Every second you waste manually calculating that -175 equals 63.6% implied probability, while +140 equals 41.7% is another second the market moves. Understanding these conversions lets you compare lines across books before they settle and identify arbitrage gaps as odds shift. Quick conversion strips out vig to reveal true expected value when it matters most.
Scanning fragmented markets with this knowledge becomes your systematic edge detector. You instantly spot when one book lists 52.4% and another 48.8%. That’s a 3.6% arbitrage opportunity. Standardizing American odds into clean probabilities gives you the precise data to exploit mispriced favorites and underdogs. In today’s data-saturated ecosystem, mastering this conversion isn’t optional. It’s what separates profitable bettors from the pack.
American Odds to Probability
Probability to American Odds
| Implied Probability (%) | American Odds |
|---|