Betting Odds Explained. Having never been explained betting odds can be intimidating. They come in different formats, and sometimes seem to work counter-intuitively. You can trust our team of experts. We have put together all the key information about how odds. The decimal odds system, which is being increasingly used by sports bookmakers across the globe, removes the extra step of calculation required by the bettor when American Odds are in use. It is a much simpler method to offer odds on the identical market and immediately gives a total return or payout figure by using one simple multiplication. Now you know that a 50% chance of landing a head or a tail corresponds to odds of 1/1. Betting site 1 gives you odds of 11/10 that the coin will land on a tail Betting site 2 gives you odds of 19/20 that the coin will land on a tail Step 3. Sports Betting Odds Explained. For the novice sports bettor, understanding how sports betting odds work can be one of the most confusing sets of numbers you've ever dealt with. For those who have just started betting on sports, to know how the odds work is of key importance for a profitable and enjoyable betting. Matched betting is available to everyone, even those of you who have never placed a bet before. If that’s you and you want to know more about betting odds, you’re in the right place! In this guide, I’ll explain what betting odds are, how they work and how we can use them to work out the probability of.

Betting odds explained

Betting odds can appear daunting at first glance but they are actually quite straightforward to calculate. We’ve devised a beginners guide to explain betting odds.

How do odds work?

When looking at the odds (price) of a horse, the two formats used are decimals and fractions. Betting exchanges operate in decimals, whereas fixed-odds betting firms generally operate in fractions.

When determining the returns of a fractional bet, the second number always suggests the stake and the first number denotes what the profit will be if the bet wins. Take 4/1 as an example. If you stake £1 on a horse, then you stand to win £4 if the selection wins the race, which excludes your initial stake. In contrast, the decimal format factors in the initial stake. Betting odds of 4/1 would equate to 5.0 in decimal terms, 5/1 would be 6.0, and so forth.

Betting Odds Explained +100 100

See the chart below for a breakdown of betting odds in both fractional and decimal format, showing forecasted returns to £5 level stakes for the key prices in a market.

Knowing your odds

Betting Odds Explained

If you want to work out your winnings from a multiple bet such as an accumulator or lucky 15, you can use our betting calculator to find out instantly what you’ve won.

As a fan, you don’t care if your team wins by a point or 100. A win is a win, though that 100-point win would be a little easier on the nerves.

In sports betting, how much a team wins by is usually all that matters.

The most popular way to bet for the two most popular sports, basketball and football, is with the point spread, also known as the “side.” Most baseball, hockey and soccer bets are on the moneyline, which is betting on a team to win straight up with adjusted odds. Football and basketball have moneyline bets available too, but most people will take the point spread.

The concept can be a bit confusing if you’ve never dabbled in sports betting before.

Why bet with the point spread?

The point spread was created to attract more action on a game. When the San Francisco 49ers are expected to blow out the Arizona Cardinals, it’s not enticing to lay $300 to win $100 on a moneyline. But when the 49ers are 11-point favorites and each side is -110 odds? That’s much easier.

In that example, the 49ers are spotting the Cardinals 11 points before the game starts, at least for bettors. The 49ers have to win by 12 or more points to cover the spread. If the Cardinals win or lose by 10 or less, that side wins the bet. If the game lands on 11, like a 21-10 49ers win, it’s a push and all bets are refunded. If you see a -11 that means that team is favored, and +11 means you’re taking the underdog.

Nothing sharpens your math skills better than trying to figure out how big your lead as a bettor is if you have a 22.5-point basketball underdog that is losing 90-72.

The problem with the point spread can be when a team — which really doesn’t care that you bet the favorite at -11 — has a 14-point lead but gives up a meaningless score at the end to win by only seven points. They’re still happy with the win. You, as a bettor, are not.

Point spreads lead to bad beats

The most infamous example of a bad beat with the point spread probably came in the 2004 Final Four at the NCAA men’s basketball tournament.

Duke was a 2.5-point underdog against UConn. The Huskies rallied late and took a 79-75 lead on a free throw with 3.2 seconds left. The game itself was over; Duke couldn’t score twice in a few seconds. But Duke guard Chris Duhon pulled up for a running 3-pointer just over the half-court line and banked it in at the buzzer. Duke lost 79-78, but bettors who had Duke and 2.5 points won. March Madness is a huge event for bettors, and reports at the time estimated that Duhon’s “meaningless” shot resulted in a $30 or $40 million swing in Nevada. UConn players celebrated at the final buzzer. UConn bettors doubled over in pain. That’s the difference between betting the moneyline and the point spread.

Baseball and hockey have point spreads too, the “run line” in baseball and “puck line” in hockey. It’s generally 1.5 with odds adjusting accordingly. Taking a big baseball favorite at -1.5 runs can make the odds more palatable. Of course, betting the New York Yankees at -1.5 to bring down the odds from -190 to -110 isn’t too fun when they win 4-3 and you don’t cash a bet.

Betting on the point spread is the most common way to wager on sports. And the first time you take a favorite that wins the game but doesn’t cover the spread, you’ll understand every bettor’s heartbreak.