Fractional odds are a type of odds commonly used in the UK and Ireland, and are presented as a fraction (e.g. 2/1) or as a ratio (e.g. 2:1). Other types of odds used in football betting include decimal odds (which are commonly used in Europe and Australia), and American odds (which are commonly used in the United States). The main difference between fractional odds and other types of odds is how they are presented and calculated. Fractional odds represent the potential profit (not including the initial stake) that can be made on a bet, while decimal odds represent the total potential payout (including the initial stake). American odds use either a positive or negative number to indicate the potential profit or loss on a $100 bet. It is important for bettors to understand the different types of odds used in football betting and to be able to convert between them, as this can help them find the best value bets and make more informed decisions.