Fraction To Decimal Odds Conversion
Understanding how betting odds work is a vital skill topossess if you want to make a consistent profit from your betting activities.
- Converting Decimals Fractions And Percentages
- Fraction To Decimal Odds Conversion Chart
- Fraction Decimal Percent Conversion Worksheet
In the United Kingdom and Europe, the two most prevalenttype of betting odds are fractional and decimal, both of which produce the sameresult.
How to convert decimal odds to fractional odds. The easiest way is to use an odds converter, but if you’d like to calculate it yourself, minus one from the decimal, then convert to a fraction and reduce the fraction to its simplest form. For example for decimal odds of 1.90: 1.90 -1 = 0.9; convert to fraction. Decimal - 1 divided by the decimal odds, multiplied by 100 to give a percentage e.g. Decimal odds of 2 = (1/2). 100 = 50%.; Fraction - 1 divided by (the fractional odds plus 1), multiplied by 100 to give a percentage. Fractional odds of 3/1 = (1 / ((3/1) + 1)). 100 = 25%.; American: Positive odds - 100 divided by (the american odds plus 100), multiplied by 100 to give a percentage e.g.
Most traditional bookmakers have historically usedfractional odds, while decimal odds tend to be found on betting exchanges.
Read on as we show you howbetting odds work and help you get to grips with the differences betweenfractional and decimal prices.
Fractional Odds
Fractional odds have their roots in horse racing in the UKand Ireland, with most bookmakers using them to display prices for each race.
These types of odds have also been used across the sportingspectrum and show how much profit a bettor will make against their stake iftheir selection is successful.
In simple terms, the number on the right of the fraction isthe amount you must stake to win the figure on the left.
For instance, a £1 stake on a horse to win a race at odds of2/1 would return a £2 profit if it finishes first. The punter would thereforereceive £3 (£1 stake + £2 profit).
Decimal Odds
The launch of betting exchanges sparked a change in the wayodds are displayed, with decimals used to show the prices on offer for eachevent.
Decimal odds are generally displayed to two decimal places,so if you place a £10 bet at odds of 3.50 your return would be £35 (£10 stake x3.50 = £35).
Although it may take a while for punters more familiar withfractional odds to understand decimal odds, they are a little easier tounderstand.
As opposed to displaying the profit you make on your stake,they convey the exact return you would receive if a selection is successful.
Converting Fractional to Decimal Odds
To convert fractional odds to decimal, you must divide thefirst figure by the second figure and then add 1.00.
For instance, fractional odds of 11/4 is 11 divided by fourwhich equals 2.75. If you add 1.00, you are left with decimal odds of 3.75.
Using the same odds, if you place a £4 bet at fractionalodds of 11/4 and your selection is successful your return would be £15 (£4stake + £11 profit = £15).
Placing a £4 bet at decimal odds of 3.75 also returns £15(£4 stake x 3.75 = £15) if your selection wins its particular event.
Converting Decimal Odds to Fractional
It is worth noting that not all decimal odds translate tofractional odds that are recognisable as the ones used traditionally in bettingmarkets.
For instance, if you have decimal odds of 1.80 this equatesto fractional odds of 4/5, but if the price shortens to 1.74, this equates to astrange-looking 37/50.
This anomaly is due to the traditional nature of thefractions used by bookmakers, which weren’t to the same full scale found indecimal odds.
This method allowed bookies to build an additional profitmargin into their books and shave extra value off the prices they offered topunters.
Using Odds Conversion Tools
There are numerous online sites which offer punters thechance to convert odds easily using innovative betting tools.
These often have four fields – fractional odds, decimalodds, American odds and implied probability (percentage).
To use an odds converter, enter a value into any field and itwill automatically convert the odds into all of the other formats.
Using an odds convertor is a great way to take the hassleout of calculating odds, particularly if the betting site you visit displaysthem in a way you are unfamiliar with.
Converting Fractional odds to Decimal – The Final Word
If you have a simple grasp of mathematics, it is extremely easyto convertfractional odds into decimals.
However, if the numbers involved leave you feeling baffled,the following chart will help!
| Fraction | Decimal | Fraction | Decimal | Fraction | Decimal |
| 1/5 | 1.20 | 5/4 | 2.25 | 5/1 | 6.00 |
| 2/9 | 1.22 | 11/8 | 2.38 | 11/2 | 6.50 |
| 1/4 | 1.25 | 7/5 | 2.40 | 6/1 | 7.00 |
| 2/7 | 1.29 | 6/4 | 2.50 | 13/2 | 7.50 |
| 3/10 | 1.30 | 8/5 | 2.60 | 7/1 | 8.00 |
| 1/3 | 1.33 | 13/8 | 2.63 | 15/2 | 8.50 |
| 4/11 | 1.36 | 7/4 | 2.75 | 8/1 | 9.00 |
| 2/5 | 1.40 | 9/5 | 2.80 | 17/2 | 9.50 |
| 4/9 | 1.45 | 15/8 | 2.86 | 9/1 | 10.00 |
| 1/2 | 1.50 | 2/1 | 3.00 | 10/1 | 11.00 |
| 8/15 | 1.53 | 11/5 | 3.20 | 11/1 | 12.00 |
| 4/7 | 1.57 | 9/4 | 3.25 | 12/1 | 13.00 |
| 8/13 | 1.62 | 12/5 | 3.40 | 13/1 | 14.00 |
| 4/6 | 1.66 | 5/2 | 3.50 | 14/1 | 15.00 |
| 8/11 | 1.72 | 13/5 | 3.60 | 15/1 | 16.00 |
| 4/5 | 1.80 | 11/4 | 3.75 | 16/1 | 17.00 |
| 5/6 | 1.83 | 3/1 | 4.00 | 18/1 | 19.00 |
| 10/11 | 1.91 | 10/3 | 4.33 | 20/1 | 21.00 |
| Evens | 2.00 | 7/2 | 4.50 | 25/1 | 26.00 |
| 11/10 | 2.10 | 4/1 | 5.00 | 33/1 | 34.00 |
| 6/5 | 2.20 | 9/2 | 5.50 | 100/1 | 101.00 |
Convert odds between American, Decimal, and Fractional format using simple odds conversion formulas. Or, skip the math and use the odds converter instead!
Decimal to Fractional
Remove 1 from the decimal and convert to a fraction, then reduce to simplest form:
(decimal-1) -> convert to fraction
Examples:
1.75: 1.75 – 1 = .75 = 75/100 = 3/4
2.20: 2.20 – 1 = 1.20 = 120/100 = 6/5
Decimal to American
To convert a decimal of 2.00 or higher:
moneyline = (decimal – 1) *100
Examples:
2.00: (2.00 – 1)*100 = 1*100 = +100
3.35: (3.35 – 1)*100 = 2.35*100 = +235
To convert a decimal of less than 2.00:
moneyline = (-100) / (decimal -1)
Examples:
1.9091 : (-100)/(1.9091 – 1) = (-100)/(0.9091) = -109.99 = -110
1.6579 : (-100)/(1.6579 – 1) = (-100)/(0.6579) = -151.98 = -152
Fractional to American
Over 1/1: Convert Fraction to Decimal and multiply by 100.
Moneyline = (fraction value)*100
Examples:
7/4: (7/4) * 100 = (1.40) * 100 = +140
6/5: (6/5) * 100 = (1.20) * 100 = +120
Under 1/1: divide -100 by the Fraction as a Decimal.
Moneyline = -100/(fraction value)
Examples:
1/4: -100/(1/4) = -100/.25 = -400
1/10: -100/(1/10) = -100/.1 = -1000
Fractional to Decimal
Convert the fraction to a decimal and add one.
Examples:
3/4: (3/4) + 1 = (.75) + 1 = 1.75
6/5: (6/5) + 1 = (1.20) + 1 = 2.20
American to Decimal
Positive Odds (“+”): Divide the moneyline by 100 and add 1.
decimal = (moneyline/100) +1
Examples:
+100: (100/100) + 1 = 1 + 1 = 2.00
+235: (235/100) + 1 = 2.35 + 1 = 3.35
Negative Odds (“-“): Divide 100 by the moneyline, then add this value to 1.00.
decimal = (100/moneyline) + 1
Examples:
-110: (100/110) +1 = 1 + 0.9091 = 1.9091
-152: (100/152) +1 = 1 + 0.6579 = 1.6579
American to Fractional
Positive Odds (“+”): Divide the moneyline by 100 and reduce to simplest form
(moneyline/100) -> simplest form
Examples:
+120: (120/100) = 6/5
+250: (250/100) = 5/2
Negative Odds (“-“): Divide 100 by the moneyline and reduce to simplest form
(100/moneyline) -> simplest form
Examples:
-120: (100/120) = 5/6
-300: (100/300) = 1/3
Odds Converter
Converting Decimals Fractions And Percentages
Skip the math and easily convert odds between Fractional, Decimal and American format:
Fraction To Decimal Odds Conversion Chart
Want this widget for your site? Grab it from our widgets page for free!
Fraction Decimal Percent Conversion Worksheet
Want to learn more? Read this full article on betting odds conversion.