- Betting odds tell you how likely an event is to happen
- They also tell you how much money you will win
- However, at first, they may seem confusing and complex
- Our comprehensive guide takes you step-by-step to explain them
In gambling, odds represent the ratio between the amounts staked by parties to a wager or bet. Thus, odds of 3 to 1 mean the first party (the bookmaker) stakes three times the amount staked by the second party (the bettor). Betting Types Single. Arguably the most common betting type. A straight win bet, placed on a single event. A single bet on two outcomes in different events. Both selections must win to guarantee a return. A single bet on three outcomes in different events. All three selections must. In the above example, if you bet $100 on Golden State to win, you could make a $90.91 profit $100 x (10/11), and could get back your initial stake of $100, resulting in a total payout of $190.91.
Betting odds are compiled by bookmakers as a way to represent what they believe is the likelihood is of an event or events happening. These odds are usually represented as either a fraction (2/1).
If you're new to betting, one of the first things you should do is learn how betting odds work. It's critically important because it allows you to understand how likely an event is to happen, and what your potential winnings will be. At first, it may appear confusing, however, read our guide and let us explain it to you.
In gambling, odds represent the ratio between the amounts staked by parties to a wager or bet. Thus, odds of 3 to 1 mean the first party (the bookmaker) stakes three times the amount staked by the second party (the bettor).
What is Probability?
The most basic level, betting provides you with the ability to predict the outcome of a certain event, and if your prediction is correct, you will win money. For any given event, there are a certain number of outcomes. Take rolling a dice for instance. If someone rolls a dice, there are six possible outcomes. Therefore, if you bet that the person rolls a ‘one', there is a 16.67% chance that will happen. What betting odds merely do is present how likely the event is to happen. Bookies most frequently in the UK do this as a fraction, i.e. 4/7, whilst the vast majority also offer the ability to view them as decimals. Again, let us talk you through them. All will become clear.
Using Betting Odds to Calculate Probability
Whenever you see two numbers separated by a trailing slash, i.e. 10/1, this is known as fractional odds. From this, you can calculate how likely a given event is to happen with a calculation. Bet sites with welcome bonus. For ease of explanation, let's replace the numbers with letters i.e. 4/1 becomes A/B. Here is the calculation: Probability (%) = B / (A+B).
- 9/1 can be calculated as 1 / (9 + 1) = 0.10– There is a 10% chance that the event will happen.
- 4/1 can be calculated as 1 / (4 + 1) = 0.20 – There is a 20% chance that the event will happen.
- 1/1 can be calculated as 1 / (1 + 1) = 0.50 – There is a 50% chance that the event will happen.
- 1/4 can be calculated as 4 / (4 + 1) = 0.80 – There is a 80% chance that the event will happen.
Hooray! We're making progress. Given a fraction, we can now tell how likely (the probability) what we're going to bet on will happen. Now let's figure out how much money can be won using betting odds.
Using Betting Odds to Calculate Winnings
Betting odds allow you to calculate how much money you will win if you make a bet. Let's use the same examples as before, with the same replacement of numbers for letters, i.e. 4/1 becomes A/B. Quite simply, for every value of B that you bet, you will win A, plus the return of your stake.
- 9/1 for every £1 you bet, you will win £9.
- 4/1 for every £1 you bet, you will win £4.
- 1/1 for every £1 you bet, you will win £1.
- 1/4 for every £4 you bet, you will win £1.
What About Decimals?
Decimals are far more common on exchanges, such as Betfair, but all leading betting sites do give you the option to view betting odds in this format. They are an alternative to seeing betting odds in the fraction format, and in our opinion, are easier to work out. Here is the calculation: winnings = (odds * stake) – stake. Let's illustrate it with some examples
- 9.0 can be calculated as (9.0 * £10 stake) – £10 stake = £80 winnings.
- 4.0 can be calculated as (4.0 * £10 stake) – £10 stake = £30 winnings.
- 2.5 can be calculated as (2.5 * £10 stake) – £10 stake = £15 winnings.
- 1.25 can be calculated as (1.25 * £10 stake) – £10 stake =£2.50 winnings.
Set card game directions. You can use our bet calculator to help you calculate winnings.
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Decimal Odds Versus Fractional Odds
In truth, one isn't better than the other but there is certainly a trend emerging towards decimal odds. Historically fractional odds were used in the UK, especially on racetracks and on the high street. There are two key differences. Generally, decimal odds are easier to understand. Based on this, there has a movement to attract more people to horse racing by making it more accessible to the average punter. Ten years ago, if you were going to Cheltenham, all the odds would be displayed as fractional odds. Now, they're largely all in decimals. Don't hesitate to check out our exclusive Premier League Betting Offers !
The second difference between the formats is that fractional odds only represent winnings, and do not include the returned stake compared to decimals which do include the stake. The transition from fractional odds to decimals largely kicked off with the growing popularity of the betting exchanges such Betfair. For odds to change slightly, it's really difficult to marginally increase or decrease the probability without creating large fractions which are hard to compute for the punter.
Use Our Tool to Convert Betting Odds Into Your Favourite Format
Our odds converter toolwill allow you see odds in whatever format you like . Not only that, but it'll tell you how likely the selection is to win!
In Summary
Betting odds represent the probability of an event to happen and therefore enable you to work out how much money you will win if your bet wins. As an example, with odds of 4/1, for every £1 you bet, you will win £4. There is a 20% chance of this happening, calculated by 1 / (4 + 1) = 0.20.
Next steps
That's it! Hopefully, that clears up betting odds. You should now have the knowledge to read betting odds, understand how likely it is to happen, and how much you stand to win.
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Welcome to the Sports Betting Odds section of The Sports Geek. If you are new to sports betting and don't understand how to read betting odds (+150, -110, +2200, etc) we will lay it all out for you and help you learn how the betting odds work.
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Sports Betting Odds Explained
Many people don't know how to read or calculate sports betting odds, so below we have done our best on explaining how betting odds work. The most common type of sports betting odds used in North America are the American style odds which we explain below.
American Style Sports Betting Odds
Most online sportsbooks will list their odds in what is called 'American Odds'. There are a couple different versions of sports betting odds, but these American Odds are the most common odds used. Reading and understanding sports betting odds can bet a little confusing to beginners, so we have provided an example below using two NFL football teams:
American Odds
- Matchup Odds
- New England Patriots +120
- Pittsburgh Steelers -140
The number shown in the bracket represents the odds. The American Odds have two components to them, the first being the positive or negative sign, and the second being the number that follows the sign.
The sign in front of the number indicates whether placing a wager on that outcome will pay out more money then you have wagered or less money then you have wagered. If the odd is negative (-) it means that outcome is more likely to happen and placing a bet on that outcome would payout less than the amount you wagered, while a positive (+) odd shows that the outcome is less likely to happen and it would pay out more than the amount you wagered.
The next step is figuring out exactly how much the bet pays out, which is where the numbers in the odds come into play.
A listed odd with a – sign in front of it, such as the -140 in our example above, shows us how much money you would need to wager in order to win $100. So using the -140, this would show us that you would need to bet $140 in order to win $100 in profits. You can easily substitute the $100 bet for a $10 bet by moving the decimal place over one spot, showing us that you would need to wager $14 in order to win $10 in profits.
Examples:
A listed odd with a + sign in front of it, such as the +120 in our example above, shows us how much money you would win on a $100 bet. Using the +120 odds, it shows us that a $100 bet on that outcome would pay out $120 in profits. Again this can easily be converted into smaller or larger size bets. A $10 bet on +120 odds would pay out $12 in profits.
Horse Bets Explained
Examples:
Below is an example of NFL betting odds taken from an online betting site.
In this example you can see Los Angeles is listed at +130 ($100 bet pays $130 plus of course your original wager back) and New England is listed at -150 ($150 bet pays $100).
If Win Bets Explained
The great thing about betting online is that the online sportsbooks will do the calculations for you before you place your bet. You can click on the outcome or team you would like to bet on, and then input the amount you wish to wager and it will show you your potential pay out before you confirm your bet.
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Decimal Style Sports Betting Odds
Teaser Bets Explained
Decimal style odds are used mostly in Europe, and are pretty easy to understand. To calculate the decimal style odds all you will need to do is simply multiply the amount you wish to wager by the decimal odds shown and you will get your payout. For example it may look something like this:
Best Explained Synonym
If you wanted to place a $10 wager on the USA at 2.40 you would simply need to multiply your $10 wager by the 2.40 odds (10 x 2.40) to find out that the payout is $24. It is important to realize that with decimal style odds it includes the amount you wagered, so to find out profits you would need to subtract your wager ($24 – $10) to find out your potential payout is $14 in profits.
Moneyline Bets Explained
If you wanted to place a $10 wager on Brazil you would again just multiply $10 x 1.55 to find out that you would win $15.50 total or $5.50 in profits.
Round Robin Bets Explained
Decimal style betting odds are very simple to understand, but you won't see them displayed in many North American sportsbooks. With that said, most online betting sites will allow you to chose the style of betting odds you want displayed, with American odds set as the default.