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Decimal odds are one of the simplest ways to understand betting odds. They are widely used around the world in countries like the United States, with bettors worldwide adopting this format. Decimal odds represent the total amount a bettor will receive for every one unit wagered, including the original stake. For example, if the decimal odds are 3.00, and you bet £1, you will receive £3 in return if you win (including your £1 stake). You simply multiply your stake by the decimal odds to determine the potential profit.
| Horse | Bet365 | William Hill | Betfair | Paddy Power |
|---|---|---|---|---|
| I Am Maximus | 9/1 | 10/1 | 8/1 | 9/1 |
| Corach Rambler | 12/1 | 14/1 | 11/1 | 12/1 |
| Vanillier | 16/1 | 18/1 | 16/1 | 17/1 |
| Mr Incredible | 20/1 | 22/1 | 20/1 | 20/1 |
For instance, a £10 bet at 3.00 odds would return £30, meaning a profit of £20. The simplicity of decimal odds makes them appealing, especially for beginners in sports betting. They provide a clear and quick understanding of the potential return on a bet without the need for additional calculations.
| Bookmaker | Offer Type | Minimum Stake | Maximum Bonus |
|---|---|---|---|
| Bet365 | Bet Credits | £5 | £30 |
| William Hill | Bet £10 Get £30 | £10 | £30 |
| Paddy Power | Money Back as Cash | £10 | £20 |
| Betfred | Bet £10 Get £50 | £10 | £50 |
| Ladbrokes | Bet £5 Get £20 | £5 | £20 |
Fractional odds are a traditional format for odds, particularly popular in the United Kingdom and Ireland. These odds are expressed as a fraction, such as 5/1, indicating the amount of profit to the amount staked. In this example, for every £1 wagered, the bettor would win £5, plus the return of their original £1 stake, making a total return of £6. Fractional odds can be more complicated to understand at first, especially for those unfamiliar with fractions.
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Negative odds - 1 minus (100 divided by the american odds) e.g. american odds of -300 = 1 - (100/-300) = 1.333. Positive odds - The american odds divided by 100 e.g. american odds of 300 = 300/100 = 3/1. Negative odds - Minus 100 divided by the american odds e.g.
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american odds of -300 = -100/-300 = 1/3. Add 1 to the fractional representation e.g. a fractional value of 3/1 = (3/1) + 1 = 4. Positive american odds - The fractional value multiplied by 100 e.g. a fractional odds of 3/1 = (3/1) * 100 = 300.
Q4. I need horse racing odds for today. Where will I find them?
Negative american odds - Negative 100 divided by the fractional odds e.g. a fractional value of 1/5 = -100 / (1/5) = -500. Subtract 1 from the decimal representation e.g. a decimal value of 3 = 3 - 1 = 2 which is commonly expressed as 2/1. Positive american odds - (The decimal value minus one) multiplied by 100 e.g. They are more commonly used in horse racing and are integral to the betting culture in the UK and Ireland.
- Specialist football sites compare odds for markets like Both Teams to Score or Correct Score.
- Dedicated horse racing portals compare starting prices and non-runner no bet (NRNB) offers.
- Some services focus on comparing odds for esports tournaments and matches.
- Financial betting and spread betting odds are compared on different platforms.
- Political betting odds are aggregated during election periods.
To calculate the potential profit, you divide your stake by the denominator (the second number in the fraction) and then multiply it by the numerator (the first number). For example, a £10 bet at 5/1 odds would yield a £50 profit, plus the return of the original stake. Implied probability is a concept derived from betting odds that indicates the likelihood of a particular outcome. It is an important tool for bettors to assess the value of a bet. In essence, it converts traditional odds into a percentage that reflects the chance of an event happening.
| Bookmaker | Man City to Win PL | Arsenal to Win PL | Liverpool to Win PL |
|---|---|---|---|
| Sky Bet | 4/6 | 3/1 | 9/2 |
| Betfred | 4/7 | 16/5 | 5/1 |
| Ladbrokes | 8/13 | 10/3 | 9/2 |
| BetVictor | 4/6 | 3/1 | 11/2 |
| Coral | 8/15 | 10/3 | 9/2 |
For decimal odds, the calculation is 1 divided by the decimal odds. For example, odds of 4.00 imply a 25% chance of that event occurring (1/4.00 = 0.25).
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Positive odds - 100 divided by (the american odds plus 100), multiplied by 100 to give a percentage e.g. american odds of 150 = (100 / (150 + 100)) * 100 = 40%. Negative odds - Firstly multiply the american odds by -1 and use the positive value in the following formula: american odds divided by (the american odds plus 100), multiplied by 100 to give a percentage e.g. Decimal - 1 divided by (the percentage divided by 100) e.g. a probability of 50% = 1 / (50 / 100) = 2.
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Fraction - (1 divided by (the percentage divided by 100)) minus 1 e.g. a probability of 25% = (1 / (25 / 100)) - 1 = 3 = 3/1. American: Positive odds - (100 divided by (the percentage divided by 100)) minus 100 e.g. a probability of 10% = (100 / (10 / 100)) - 100 = 900.Negative odds - The probability divided by (1 minus (the probability divided by 100)) then multiply by -1 to convert into a negative e.g. a probability of 60% = (60 / (1 - (60/100))) * -1 = -150.
Common Betting Types
Positive odds - (100 divided by (the percentage divided by 100)) minus 100 e.g. a probability of 10% = (100 / (10 / 100)) - 100 = 900. Negative odds - The probability divided by (1 minus (the probability divided by 100)) then multiply by -1 to convert into a negative e.g. Positive odds - 1 plus (the american odds divided by 100) e.g. american odds of 300 = 1 + (300/100) = 4. For fractional odds, the calculation is the denominator divided by the sum of the numerator and denominator. For example, odds of 1/4 imply a probability of 80% (4/(1+4)). Implied probability is crucial for bettors as it helps them compare an event’s likelihood with the odds being offered. It’s a key aspect of ‘value betting’ – identifying when the odds on offer provide a favourable return relative to the perceived probability of the event. OddsMonkey offers an implied probability calculator that is useful for working out the differences between the bookmakers’ odds and your implied chance of the selection winning. OddsMonkey provides a huge variety of sports betting guides and tools which are incredibly useful to bettors of all experience levels.
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This simplicity in understanding and calculating potential returns makes them popular, where ease of use is a priority. Fractional odds, while potentially more complex, provide a direct sense of the profit relative to the stake, which can be more intuitive for assessing risk and reward in certain betting communities. Understanding the odds is crucial when betting on sports for several reasons, including risk management. Different odds can represent the same probability but in a different format. Understanding these formats helps bettors manage their risk more effectively. There are tools like the matched betting calculator available, joining a whole list of betting calculators on the site. Regardless of how much sports betting you have done in the past or what your level or experience is, the calculators on offer from OddsMonkey are easy to use and will always provide accurate results.
Why UK Bettors Love Odds Comparison
Negative american odds - Negative 100 divided by (the decimal odds minus one) e.g. Betting Calculator - Enter your odds and stake to calculate bet returns for all types of sports wagers. Supports all major formats including decimal, fraction and american. Dutching Calculator - Odds changed since you placed your last bet? Use this calculator to determine the stakes necessary to guarantee a fixed return regardless of the outcome.
Fractional odds explained
Punters comfortable with exchange betting often use this approach as odds fluctuate more frequently. AceOdds provides the most comprehensive and reliable suite of bet calculators, with over 50,000 bets calculated daily. Trusted by independent bookmakers and punters to work out returns, you can be sure that the calculations are accurate. PL's most negative fanbases Who tops the list? bet365 Edit Bet Feature Use the bet365 Edit Bet feature to amend your bets Monreal on Arsenal's UCL final chances Can they win the big one?
What do you want to bet on?
An odds conversion table is a handy tool that simplifies understanding different odds formats—fractional and decimal—along with their implied probabilities. While fractional odds are steeped in UK betting traditions, decimal odds, preferred in many other regions, offer a clearer view of potential returns. Grasping these odds is essential for effective risk management and making informed betting decisions. An odds conversion table is a useful piece of formatted data that provides information about a list of the common odds and what they equate to in both the fractional and decimal formats, as well as their implied probability. Of course, on most bookmakers and exchanges, you can change the odds displayed in your account settings, but using an odds conversion table like this one at OddsMonkey will save you a lot of time, especially if you want to swap between the two formats frequently. These betting calculators and other tools are designed to be usable for anyone and everyone. New customers: Deposit £10+ within 7 days and place a sports bet. Get 4 x £10 Free Bets (2 x £10 Bet Builders & 2 x £10 Sports Bet). Excludes virtual sports, esports and non-UK/IE horse racing. Open to new and existing BetUK players aged 18 or over. Promo runs from Monday 00:00 until Sunday 23:59.
The most popular locations for horse racing
The table’s main use is to help you understand the difference between Fractional odds, Decimal odds, and the implied probability of whatever odds your chosen bookmaker is offering. You can use our odds converter to do the calculations manually without having to look at the graph at the bottom of this page. However, finding out the implied probability is also very useful. The existence of various odds formats, such as decimal and fractional, stems from historical and regional preferences, along with a few other reasons. Fractional odds have deep roots in the UK and Ireland within horse racing and are part of the traditional betting culture.
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In Europe, Canada, and Australia, the decimal odds are regionally preferred. These regional preferences have been shaped through years of history. The ease of understanding is also a huge factor. Decimal odds are generally considered more straightforward, especially for beginners. They clearly show the total amount that will be returned on a winning bet for each unit staked, including the original bet. Qualifying bet must be £10+ on any Football Bet Builder market and placed at odds of 2/1 (3.0) within 7 days. Min 10p stake (min Jackpot stake of 9p with multipliers available).
- Compare the odds for a Premier League match winner across Bet365, William Hill, and Ladbrokes.
- Check the variation in each-way place terms for a major horse racing festival.
- Analyse the price differences for an outright winner of a tennis Grand Slam tournament.
- Review the odds for a novelty or political bet across different platforms.
- Monitor the over/under goals market for a Champions League fixture.
Here at BetUK, our focus is to provide the greatest online Sportsbook experience for our bettors. We do this by providing competitive odds across a wide range of sports, political and novelty events.
Best Odds Guaranteed Explained
It allows them to bet odds comparison sites horse racing accurately calculate potential returns and losses, which is key to maintaining a sustainable betting strategy. Comparing odds for assessing probability and value can be beneficial, too. Odds represent the probability of an event occurring and the potential return on a bet. Understanding how to interpret these odds is essential for assessing whether a bet offers good value. This means comparing the likelihood of an event (as you perceive it) with the implied probability of the odds.


