Decimal to Fractional Odds Converter

Select the odds formats you're converting to/from, then enter your odds.
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How to Use Our Decimal to Fractional Odds Converter

To use our Decimal to Fractional Odds converter, simply enter your Decimal odds in the "Odds" input field.

The tool will automatically output your Fractional odds after you've input valid odds.

It's also possible to change the "From Odds Format" and "To Odds Format".

Lastly, you may also want to check out our odds converter which let's you convert between Decimal, American, Fractional, Implied Probability, Hong Kong, Malaysian, and Indonesian odds all from one page!

How to Convert Decimal odds to Fractional odds

To convert Decimal odds to Fractional odds:

Subtract 1 from the decimal odds and convert it to a fraction.

Example for Decimal Odds of 4: 4 - 1 = 3, which converts to 3/1

Decimal odds and Fractional odds Explained

Here are the basics of Decimal odds and Fractional odds.

Decimal Odds

Decimal odds are commonly used in continental Europe, Canada, and Australia. Decimal odds are a number greater than 1.

You can calculate your total payout by multiplying your bet size by the decimal odds. For example, a $10 bet at 2.5 decimal odds would payout $25. You can then subtract your bet from this total payout to find your potential profit ($25 - $10 = $15).

  • Decimal odds greater than 2 are underdogs, with larger decimal odds being less likely to win. 2.1 converts to a 47.62% implied probability, while 4.0 converts to 25%.
  • Decimal odds less than 2 are favorites. The lower the value, the bigger the favorite. 1.923 has an implied probability of 52%, while 1.25 is 80%.
  • Decimal odds of exactly 2 have a 50% implied probability.

Fractional Odds

Most popular in the United Kingdom and Ireland, fractional odds are expressed as a fraction where the denominator is the amount bet, and the numerator is your potential winnings. For example, if you win a bet placed at 1/3 odds, you'll profit $1 for every $3 bet.

Fraction odds are also commonly used in the United States for horse racing.

  • Fractional odds greater than 1 are underdogs, with larger fractions having a lower implied probability. 11/10 has an implied probability of 47.62% and 3/1 is 25%.
  • Fractional odds less than 1 are favorites, with smaller fractions having a higher implied probability. 10/11 is an implied probability of 52.38% and 1/3 is 75%.
  • 1/1 has an implied probability of exactly 50%.

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