

If you are reading this from the USA and are considering placing bets, then you need to consider your local legislation regarding gambling as it is still illegal in a number of US states as of 2022 (see reference below for the current status of your state).

That is expressed in the odds which result in that one would need to bet $120 to have the possibility to win $100 on team A whereas one need only bet $50 on team B to have the possibility to win the same $100 (200 / 100 * $100 = $50). This means a bookmaker beliefs, typically based on data, that team A has much greater chance of winning compared to team B. In the case of sports betting, negative odds are given to the favorite to win and positive odds are assigned to the underdog.įor a working example, consider an NFL game where team A is given odds of -120 and team B is given odds of 200. This means negative odds are given to the event which is considered more probable whereas positive odds are given to the event considered less probable. odds in the negative half of this range represent the amount one needs to stake to win $100 while odds in the positive half represent the amount one stands to win on every $100 staked.
#Convert odds to percentage plus
These are also known as 'moneyline' odds and span the range from minus infinity to -100, and from +100 to plus infinity. There are different ways of giving odds in such a context and they are named mostly based on the geographical location where their use is most typical. It could be the outcome of a sports game or match, a political race, or any number of things if expressed in terms of win/lose or win/lose/tie. In the context of betting odds are directly linked to the implied probability of the outcome of interest. Alternatively, we have nine to one odds for not rolling a sum of five. The odds of that happening versus not happening are one to nine.

In simple games with dice it could be the odds of rolling a sum of five with two six-sided dice versus not rolling it. Odds typically refer to the ratio between the probability of one event happening versus another where the two events are mutually exclusive and exhaust all possible outcomes.
#Convert odds to percentage how to
