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Bookmakers in the UK and Ireland tend to display their odds in a fraction format by default. This is a tradition that started many years ago at the racetracks and looks likely to stay for a while longer.
However, with the emergence of online betting and betting exchanges which only show decimal odds (unless you hover over the selection), being able to quickly do a fraction to decimal conversion can be especially important.
Horse racing markets can move quickly, and you do not want to be caught short and being unable to convert the fractions to decimals.
Most people find it difficult to work out the returns from a bet when they are displayed in fractions and once you have converted your odds, the number will generally be easier to understand.
Fraction To Decimal Top Tip
Instead of using Fraction odds at your bookmaker, change the settings to decimal. This can easily be done, and we highly recommend this approach. We have a how to set up a betting article to better explain this process.
How do you convert fractional odds to decimal odds?
Basically, you must divide the fraction then add 1.
Below we have put together some examples of how you can covert Fraction Odds to Decimal odds without using a table or calculator.
So,
Odds of 5/1 will be 5 divided by 1, which equals 5, then add 1 which equals Decimal odds of 6.
Odds of 10/1 will be 10 divided by 1, which equals 10, then add 1 which equals Decimal odds of 11.
Odds of 13/2 will be 13 divided by 2, which equals 6.5, then add 1 which equals Decimal odds of 7.5.
Odds of 7/4 will be 7 divided by 4, which equals 1.75, then add 1 which equals Decimal 2.75.
Odds of 4/7 will be 4 divided by 7, which equals 0.57, then add 1 which equals Decimal odds of 1.57.
How do you convert to decimal odds to fractional odds?
Basically, you must subtract 1 and convert into a fraction.
Below we have put together some examples of how you can covert Decimal Odds to Fractional odds without using a table or calculator.
Odds of 6 will be, 6 – 1, which equals 5, then convert to a fraction 5/1.
Odds of 11 will be, 11 – 1, which equals 10, then convert to a fraction 10/1.
Odds of 7.5 will be, 7.5 – 1 , which equals 6.5, then convert to a fraction in its most reduced form 13/2.
Odds of 2.75 will be, 2.75 – 1, which equals 1.75, then convert to a fraction 7/4.
Odds of 1.57 will be, 1.57 – 1, which equals 0.57, then convert to a fraction 4/7.
We have also put together an odds explained article which includes American odds.
Below is a great table for your reference.
Fraction To Decimal Odds Conversion Table
| 1. Fraction | 1. Decimal | 2. Fraction | 2. Decimal | 3. Fraction | 3. Decimal |
|---|---|---|---|---|---|
| 1/10 | 1.1 | 1/1 | 2 | 5/1 | 6 |
| 1/9 | 1.11 | 11/10 | 2.1 | 11/2 | 6.5 |
| 1/8 | 1.12 | 6/5 | 2.2 | 6/1 | 7 |
| 1/7 | 1.12 | 5/4 | 2.26 | 13/2 | 7.5 |
| 1/6 | 1.17 | 11/8 | 2.38 | 7/1 | 8 |
| 1/5 | 1.2 | 6/4 | 2.5 | 15/2 | 8.5 |
| 2/9 | 1.22 | 13/8 | 2.62 | 8/1 | 9 |
| 1/4 | 1.25 | 7/4 | 2.76 | 17/2 | 9.5 |
| 2/7 | 1.29 | 9/5 | 2.8 | 9/1 | 10 |
| 3/10 | 1.3 | 15/8 | 2.88 | 10/1 | 11 |
| 1/3 | 1.33 | 2/1 | 3 | 11/1 | 12 |
| 4/11 | 1.36 | 85/40 | 3.15 | 12/1 | 13 |
| 2/5 | 1.4 | 11/5 | 3.2 | 15/1 | 16 |
| 4/9 | 1.44 | 9/4 | 3.25 | 20/1 | 21 |
| 1/2 | 1.5 | 12/5 | 3.4 | 30/1 | 31 |
| 8/15 | 1.53 | 5/2 | 3.5 | 40/1 | 41 |
| 4/7 | 1.57 | 13/5 | 3.6 | 50/1 | 51 |
| 8/13 | 1.62 | 11/4 | 3.75 | 60/1 | 61 |
| 4/6 | 1.67 | 3/1 | 4 | 70/1 | 71 |
| 8/11 | 1.73 | 10/3 | 4.3 | 80/1 | 81 |
| 4/5 | 1.8 | 7/2 | 4.5 | 90/1 | 91 |
| 5/6 | 1.83 | 4/1 | 5 | 95/1 | 96 |
| 10/11 | 1.91 | 9/2 | 5.5 | 100/1 | 101 |
