There are 3 methods of stating odds that most bookmakers and websites support.
Implied Probability is also useful when evaluating a bet or checking how likely an outcome is.
Betting Calculator - Enter your odds and stake to calculate bet returns for all types of sport wager. Supports all major formats including decimal, fraction and american.
Dutching calculator - Odds changed since you placed your last bet? Use this calculator to work out the stakes necessary to guarantee a fixed return irregardless of the outcome. This approach is most often using by punters comfortable with exchange betting as odds fluctuate more frequently.