What are fractional odds?

Fractional odds (traditional in the UK and Ireland) show profit relative to stake as a fraction. Odds of 5/2 mean you profit $5 for every $2 wagered. To convert: divide the numerator by the denominator to get profit per unit (5/2 = 2.5x your stake). Fractional odds of 1/1 ("evens") equal American +100 or decimal 2.0.