How to Convert Decimal Odds to Fractional?

convert decimal odds to fractional

Decimal odds are popular due to their straightforward nature, fractional odds are deeply rooted in tradition, especially in the UK. Let’s look at how you can convert decimal odds to fractional odds.

Understanding Decimal Odds

Decimal odds are widely used because of their simplicity. They represent the total payout (stake included) for a winning bet. For example, decimal odds of 3.5 mean you receive $3.50 for every $1 wagered, including your original stake, on a successful bet.

How to Convert Decimal Odds to Fractional?


Fractional Odds = (Decimal Odds – 1)/1

In other words, subtract 1 from the decimal odds to get the numerator and use 1 as the denominator. Simplify if necessary (usually is).

Step-by-Step Conversion from Decimal Odds to Fractional

Suppose the decimal odds are 3.5.

Apply the Formula: Fractional Odds = (3.5 – 1) / 1 = 2.5/1

No you have to simplify the fraction to get rid of decimal numbers:  2.5 / 1 = 5 / 2 after simplification.

Use our Fraction Odds to Decimal, American & Probability Converter

For a quicker, error-free conversion and fraction simplification, use our online tool: Fraction Odds to Decimal, American, Probability (Converter), which seamlessly converts decimal odds to fractional, American odds, or even probability percentages.

Why Convert to Fractional Odds?

Fractional odds, prevalent in the UK and Ireland, offer a traditional view of betting odds. They primarily show the potential profit relative to the stake. For example, odds of 5/2 mean you win 5 units for every 2 units you bet, should your bet succeed.

Matej Šuľan

Fantasy Football enthusiast with two top 1k finishes in FPL. Best FPL overall rank: 119th in 2019/20 season. Five top 500 finishes in UCL Fantasy, best overall rank: 23rd in 2018/19 season. Founder of Fantasy Football Reports.

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