Use the tool below to convert odds between American, decimal, fractional and percentage formats.

Betting Odds Explained

American To Decimal Odds Converter

The odds converter tool offers the easiest way to change between different odds format used in bookmakers and different betting sites, such as.Fractional.,.Decimal. and.American. and even the likes of Hong Kong, Indonesian and Malay odds. By utilizing our odds converter you will be able to do sports betting odds conversion in an instant,. Smarkets’s odds converter converts decimal odds, American odds, fractional odds and percentage odds into your preferred odds format, so you can quickly identify.

American Odds – American Odds are the default odds format at most US friendly betting sites as well as Nevada sports books. Here odds are expressed as either a negative or a positive number. When positive the odds represent how much a player will profit on a successful $100.00 wager. So for example if the odds are +180 a successful $100 bet will return $280 (the $100 stake + $180.00 win). When the odds are negative they represent how much a bettor must stake to win $100. Therefore $150 staked at -150 returns $250.00 (the $150 stake + $100 win).

1. Our Odds Converter will convert Decimal odds, American odds and Fractional odds into your chosen odds format. Enter the Decimal odds, American odds or Fractional odds you wish to convert and our Odds Converter will do the work for you. Decimal odds will be converted to the nearest standard American or Fractional equivalent.
2. Convert values between American, Fractional and Decimal Odds.

Decimal Odds – Decimal Odds, also referred to as European Odds, are used in most European countries and are the default option of many Asian bookies as well. This is the easiest odds format to understand as the odds represent how much a 1 unit wager returns. For example a €1 wager at odds 1.91 returns €1.91. This return includes both your stake plus profit; to calculate how much your return will be simply multiple your stake by the given odds.

Fractional Odds – Fractional Odds are used in the UK and Ireland. Here the first number is the amount to be won, and the second number is the stake. So for examples 4/1 is stake 1 to win 4, and 10/11 is stake 11 to win 10. To calculate how much a winning bet will profit, convert the fraction to a decimal and multiply it by the stake. For example 3/2=1.5, so, if wagering at 3/2 a successful bet will return 1.5 times your stake in winnings and will also return your stake.

Decimal To Odds Calculator

Implied Probability – Implied Probability is how often a bet must win to average break even. This is calculated as risk/return, so for example +200 in American format (3.00 European) is risk $100 to win $200 so a winning wager returns $300 ($100 stake + $200 win). Therefore the implied probability of +200 is $100/$300= 0.3333, which is 33.33%. For this reason you should only wager at +200 if you think the probability of winning is greater than 33.33%.

Converting American Odds To Decimal

On the topic of odds, refer to our No-Vig Calculator for a better understanding of how betting odds work.