How To Convert American Odds To Fractional

Only specific fractional prices are used by oddsmakers, converting using the following formulas may not give you a real fractional price.  A better option is to use an Odds Conversion Table.

In order to convert odds from American to Fractional you must understand Converting Decimals to Fractions and converting Fractions to their Simplest Form.

 

Positive Odds

Positive Odds (“+”): This conversion is performed by dividing the moneyline by 100, turning the decimal into a fraction, then reducing the fraction to its simplest form.

Fractional = (Moneyline/100)

Examples:

+120: (120/100)= 1.2 = 12/10 = 6/5
+235: (235/100) = 2.35 = 235/100 = 47/20*

*47/20 is not a fractional price that would commonly be used by  sportsbook. The price used by the oddsmaker is more likely to be something close, in this case 9/4.

 

Negative Odds

Negative Odds (“-“): The conversion is performed by dividing 100 by the moneyline, turning the decimal into a fraction, then reducing the fraction to its simplest form.

Fractional = (100/Moneyline) + 1

Examples:
-125: (100/125) = .8  = 8/10 = 4/5
-152: (100/152) = 0.66 = 66/100 = 33/50*

*33/50 is not a fractional price that would commonly be used by  sportsbook. the price used by the oddsmaker is more likely to be something close, in this case 3/5. 

Skip the math and easily convert between odds types using our odds converter.

 

Follow the links learn more about sports betting and betting odds conversion.