On the flip side, if you begin working with modeling involving setting your own implied probability to an outcome, American odds likely won’t suit your purposes, and converting to decimal odds will be a big part of your process. Converting these into American odds will be quite helpful when you are placing your bets as you would likely want to know if the betting odds you are getting are as good as theirs. Perhaps you are following a tipster on social media from another part of the world and he is using decimal odds or fractional odds each time he talks about a play he likes. It will also give you the implied probability odds. An odds calculator lets you enter your odds and automatically converts them into decimal, American, and fractional odds.