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William Hill offers odds for many different aspects of an individual event. For example, for a football match, you could bet on goals scored, yellow cards, fouls, corners in the first half or the final score.
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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. 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.
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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? Welcome to bet best betting offers uk today this William Hill guide on betting odds. Here you will learn everything there is to know about betting odds, how to read different configurations, the best ways to utilise your preferred format, and how to convert betting odds. It is essential to understand how betting odds work when preparing to make a bet. Each outcome will have been priced up individually based on the probability of it happening.
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Odds correlate to probability e.g a 3/1 bet is expected to win one in every 4 attempts. Decimal - 1 divided by the decimal odds, multiplied by 100 to give a percentage e.g. Fraction - 1 divided by (the fractional odds plus 1), multiplied by 100 to give a percentage. fractional odds of 3/1 = (1 / ((3/1) + 1)) * 100 = 25%. American: Positive odds - 100 divided by (the american odds plus 100), multiplied by 100 to give a percentage e.g.
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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. american odds of -300 = (300/(300+100)) * 100 = 75%. 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. You will likely come across fractional odds first when looking for betting odds. Fractional odds, for example, show us our potential winnings if we wager the corresponding stake. The number on the left-hand side is your winnings if you were to stake the figure on the right-hand side. For example, with odds of 10/1, £10 would be your winnings if you placed a £1 bet and won. To read the betting odds, click on the event you are interested in and take note of the odds listed.
- Aggregated "best odds" guarantee tables for top 5 bookmakers per market
- Weather condition indicators for outdoor sports when it affects betting lines
- Historical performance data showing which bookmaker offers the best price most often
- Social sharing feature for "best find" odds comparisons
They will be fractional, in decimal or American format, each of which will be explained below. Fractional odds bet gambling bonus no deposit use a fractional format to display possibility of an event happening. This is one of the most straightforward ways of determining how much you will win from a bet and is a quick and simple way to understand the probability of an event happening. Here are some examples of fractional bets, how they would work and how much the bookies will pay out for a win.
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A lack of comprehension of the basic fractional or decimal odds could lead to losses by placing a wager you thought was something else. Even bettors that are experienced using one format of odds, fractional, for example, can benefit from understanding the full spectrum of betting odds. They may find that utilising multiple formats aids their betting success more than relying on one kind. Betting odds are the odds on a particular outcome and are determined by the bookmaker. For example, England are one of the leading contenders at 6/1 to win the 2026 World Cup.
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Betting odds are the ratio between the amount staked by the bookies and the bettor, so 6/1 means the bookies stake six times the amount the bettor has wagered. If the bettor wins; their predicted outcome materialises; they will take six times their bet from the bookie (in this case). For example, if you were to stake £1 then you would receive £7 back from the bookmaker in this case – £6 profit plus your initial stake. The odds are calculated by the bookmaker. They will estimate the probability of an event taking place and based on their prediction, will display odds. 3/1 – Bookies pay £3 for every £1 staked 15/2 – Bookies pay £15 for every £2 staked 3/5 – Bookies pay £3 for every £5 staked 1/1 – Bookies pay £1 for every £1 staked The first two bets are called “odds-against” bets: a scenario where the bookie thinks the event is more likely not to happen – the bookie is betting against an event occurring and that it is unlikely. The third one is an “odds-on” bet: a scenario where the bookie thinks the event is likely to happen. When both numbers are the same (last example), this is an “evens” bet: a 50/50 bet.
| App Name |
Integrated Bookmakers |
Primary Markets |
Live Update Speed |
| Oddschecker |
Bet365, Ladbrokes, William Hill, Paddy Power |
Football, Horse Racing, Tennis |
Real-time |
| Betfair Exchange |
Betfair, Sportsbook partners |
All major sports, Politics |
< 10 seconds |
| Flashscore Betting |
20+ European bookies |
Football, Basketball, Ice Hockey |
Near real-time |
In this scenario you would double your stake if placing a winning bet. Before making a bet, a bettor may want to take into account the profit and their wager to work out the percentage return if they win. For example, odds of 3/1 would provide a 300% profit as the payout from the bookie, as well as 100% of the money wagered. If the bettor wagered £10 and won, their profit would be £30 + the bet of £10 = a return of £40. To convert fractional odds to percentages, use the formula (x / y) * 100 with x/y representing the fraction. A bet of £10 with the odds 7/3. Add the wager to the won amount = £33.33 return. When presented with fractional odds, it can sometimes be very easy to determine the probability of an occurrence, but at other times it might not be so simple. Knowing the probability of an outcome can be essential to bettors who are perhaps not as well informed on a certain event, so if you want to put a bet down but would like to understand how likely the outcome is with data and a fixed probability, use the formula (y / (x + y)) * 100 where odds equal x/y. Odds: 3/1 (1 / (3 + 1)) * 100 (1 / 4) * 100 0.25 * 100 25% probability of winning Odds: 7/3 (3 / (7 + 3)) * 100 (3 / 10) * 100 0.3 * 100 30% probability of winning Odds 1/1 (1 / (1 + 1)) * 100 (1 / 2) * 100 0.5 * 100 50% probability of winning which is why odds of 1/1 is called “evens”.
- Odds history graphs showing line movement over the past 24 hours
- Filtering options by sport, league, event type, and bet type
- Bookmaker reliability scores and user payout reviews
- Arbitrage opportunity detector with calculated profit percentage
- Integrated bet calculator for potential returns on parlays and systems
It is always worth considering that the odds displayed and offered by bookies are always probability based and can never be made as a guarantee that a certain event will happen. Now that you have a good understanding of fractional odds and probability and are ready to start weighing up individual bets. William Hill provides unmatched betting odds across sports, television, politics and more.
How to read betting odds?
William Hill offers the reader and bettor the opportunity to request their own odds. Through the popular #YourOdds on Twitter, punters can request odds on an outcome not listed by the bookie at the time and be one of the first to place a bet on a specific outcome of their choice. The social media team will pass on the punter’s requests to the traders upstairs, and if the request is approved, the punter will be able to bet on their own fully customised odds on the day they requested them before anyone else. You are looking for odds on something you want to bet on? On William Hill’s website, you will find the odds you are looking for and a breakdown of what the odds are for specifically. Another format of odds that is popular among punters is decimal odds.
| Feature |
Description |
User Benefit |
| Odds Alert |
Notifies user when odds for a selected outcome hit a threshold. |
Capitalizes on value bets. |
| Arbitrage Scanner |
Automatically detects arbitrage opportunities across bookmakers. |
Guaranteed profit potential. |
| Historical Odds Data |
Provides charts of odds movement over time. |
Informs betting strategy and timing. |
| One-Click Bet Placement |
Redirects to bookmaker with bet slip pre-filled. |
Saves time, locks in odds quickly. |
Decimal odds use a decimal format to display the stakes and are usually utilised for a quick view of the probability of an event.
Tips for Using Football Betting Apps
Positive odds - 1 plus (the american odds divided by 100) e.g. american odds of 300 = 1 + (300/100) = 4. 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.
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american odds of 300 = 300/100 = 3/1. Negative odds - Minus 100 divided by the american odds e.g. american odds of -300 = -100/-300 = 1/3. Add bet free bets uk no deposit bonus 1 to the fractional representation e.g. a fractional value of 3/1 = (3/1) + 1 = 4. Decimal odds also make it easier for punters to compare odds without complicated mathematical formulas and allow for a quick view of potential winnings.
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Decimal - 1 divided by (the percentage divided by 100) e.g. a probability of 50% = 1 / (50 / 100) = 2. 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.
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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. 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. The higher the number, the higher the potential winnings. The William Hill website allows bettors to choose between their preferred odds format, be that decimal or fractional.
Understanding Horse Racing and Football Betting Odds
Positive american odds - The fractional value multiplied by 100 e.g. a fractional odds of 3/1 = (3/1) * 100 = 300. 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.
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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. 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.