The most common American odds you’ll see is -110 and is often seen as the juice/vig on points spreads and Over/Under Totals. An easy way to think about American odds calculation is to think of them as currency exchanges in $100 increments. American odds explainedĪmerican odds are presented in hundreds and thousands and are defined by the positive (+) or negative (-) value assigned. Use our betting odds and moneyline calculator tool above to convert these odds and learn more about them below. While they all mean the same thing, understanding how they work with your wager can be tricky. The way sports betting odds are presented can differ between American, Fractional, and Decimal.