Outside of the US, the standard way to display odds is in Decimal format. As newcomers to betting, it's usually considered easier to read Decimal odds because we can deduce the implied probability a little bit easier than American Odds. Think of this when you're trying to calculate the value in decimal odds: The odds represent what you would get back, including your stake, if you were to put down a single dollar. Decimal Betting Odds Calculator Let's do a simple decimal betting odds calculation as an example. To illustrate, let's look at the 2nd UFC fight between Conor McGregor and Nate Diaz. McGregor stepped into the Octagon as the favorite, at Decimal odds of 1.80 (or -130 in American odds). Diaz was the underdog at 2.1, which transates to +110 in American odds. Had you placed a 1$ bet on McGregor to win, which he ultimately did, here's how your return and winnings would be calculated: Stake$1Odds1.8Return$1.8 (1.8 x $1)Winnings/Profit$0.8 ($1.8 return minus $1 stake) A simple betting calculator example to illustrate how decimal odds work