Recently UK bookmakers would typically display their odds in fractional form (5/4, 4/1 and so on), especially where horse racing was concerned. However, today the bookmakers tend to provide the option of displaying decimal odds too (2.25, 5.00 – in relation to the bracketed fractional odds above). This method of displaying odds is popular in Australia, Canada and most of Europe. On betfair for example the decimal is the default setting, rather than the fractional version (also known as ‘traditinal odds’). The below chart is a useful guide to help in converting fractional and decimal odds:
