Fractional Odds — How to Read UK Odds in Bookies?

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Lina Almans

22 July 2024

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Fractional odds (aka UK odds) are a common way to represent betting odds, especially popular in the Britain and other Commonwealth countries. They’re presented as a fraction, such as 3/2 or 22/17.

Note: The 1st number shows how much profit you can make, and the 2nd number shows how much you need to bet to make that profit.

For example, let’s say the odds for Barcelona to win are given as 77/100. This means for every $100 you bet, you could make a profit of $77 if the team wins.

Here’s a simple way to understand them:

  • The first number (77) is the profit you can make.
  • The second number (100) is the amount you need to bet to get that profit.

So, for every $100 you wager at 77/100 odds, you have the chance to win $77, and your total payout would be $177 (your $100 stake plus the $77 profit).

Converting British Odds to European Odds

Now, let’s talk conversion. To switch from fractional (UK) odds to decimal (European), you just divide the numerator by the denominator and then add 1.

Here’s how it looks mathematically:

Decimal Odds = (Numerator / Denominator) + 1

So, in our example, (3/2) + 1 becomes 2.5 in decimal form.

Practical Example: Betting with Fractional Odds

Let’s put that formula into action with a real-world example. Say there’s a Premier League match between Newcastle United and Southampton. The bookie offers odds of 99/250 for Newcastle United to win, 118/25 for a draw, and 7/1 for Southampton to come out on top.

fractional odds

Here’s how these odds play out in real bets:

Here’s the breakdown:

Newcastle United: If you bet $250 and they win, you’d get a $99 profit. So, your total payout would be $349 (the $250 stake plus the $99 profit).

Draw: If you bet $25 on a draw and it happens, you’d make a $118 profit. Your total payout would be $143 (the $25 stake plus the $118 profit).

Southampton: If you bet $1 and they win, you’d get a $7 profit. Your total payout would be $8 (the $1 stake plus the $7 profit).

Three primary types of odds: