What are fractional odds?

Fractional Odds

Fractional odds are represented as a fractional number and show what your profit will be on a one-unit wager. For example, odds of 4/1 ("four-to-one" or "four-to-one against") means that you stand to win $4 for every $1 you wager. On the other hand, odds of 1/4 ("four-to-one on") means that you must wager $4 to win $1. When the odds are 1/1, you'll win exactly what you wager. The fractional form of a standard line is 10/11.

Fractional odds are widely used in the UK and Australia. In Bodog Sportsbook, you'll see them with futures and most entertainment props.