Our odds converter is the easiest way to convert sports betting odds between American, decimal, and fractional odds formats. Simply enter your odds into the calculator below and then click outside of the table to instantly see the odds in additional formats.
Decimal Odds - Enter your odds in the following format, 1.05.
Fractional Odds - Enter your odds in the following format, 1/2.
American Odds - Enter your odds as either 110 or -110.
How to Use Our Odds Converter
Our odds converter was designed to allow sports bettors to move between different types of odds as quickly as possible. Follow these three steps to get started:
- Enter your odds into the box that corresponds with the format you are converting from. If your odds are a +/- number (+110 or -110 for example), they are American odds. If they are a number with a decimal (2.4 for example), they are decimal odds. If they look like a fraction (9/2 for example), they are fractional odds.
- Click anywhere outside of the box to convert the odds.
- To restart the process, simply delete any of the listed odds.
Be sure to check out our payout calculator which will give you the exact payout for any bet size at any given odds.
Why Use an Odds Converter?
New sports bettors are often confused by the different odds formats. U.S. sportsbooks will use one odds format for certain sports and bets and a different odds format for others.
Our odds converter is the easiest way possible to convert odds from one format to another so you can see odds in the format you prefer.
Understanding odds, bet types, and how payouts work is an essential step to becoming a successful sports bettor. This odds converter will help to lessen the learning curve when it comes to understanding exactly how a golfer's 14/2 odds compare to an NFL team's -110 odds.
Never is this tool more useful than when live betting on a sport that does not use an odds format you are familiar with. Time is critical when wagering on live events as odds change constantly as the game plays out. Simply pull up this tool and quickly see each wagering option with the odds format of your preference in seconds.
Equations for Converting Odds Formats
We've done the math, so you don't have to. However, if you are interested in the equations used to convert between different odds formats, they can be found below.
Equation for Converting American Odds to Decimal Odds
If the American odds are positive, the formula is:
Decimal Odds = (American Odds ÷ 100) + 1
If the American odds are negative, the formula is:
Decimal Odds = (100 ÷ American Odds) + 1
Equation for Converting American Odds to Fractional Odds
If the American odds are positive, the formula is:
Fractional Odds = American Odds ÷ 100
If the American odds are negative, the formula is:
Fractional Odds = −100 ÷ American Odds
Equation for Converting Decimal Odds to American Odds
If the decimal odds are greater than 2, the formula is:
American Odds = (Decimal Odds - 1) x 100
If the decimal odds are less than 2, the formula is:
American Odds = -100 ÷ (Decimal Odds - 1)
Equation for Converting Decimal Odds to Fractional Odds
The formula is:
Fractional Odds = Decimal Odds − 1
Convert this decimal to the nearest whole number fraction.
Equation for Converting Fractional Odds to Decimal Odds
The formula is:
Decimal Odds = Fractional Odds + 1
Equation for Converting Fractional Odds to American Odds
If the fractional odds result in a value greater than 1, the formula is:
American Odds = Fractional Value x 100
If the fractional odds result in a value less than 1, the formula is:
American Odds = −100 ÷ Fractional Value
