It gets a lot more confusing when it is odds on, because you may have -400. Now -400 is the inverse of +400, so 4/1 becomes 1/4, which is Decimal 1.25.

App Name	iOS Rating	Android Rating	Total Reviews
Oddschecker	4.7	4.5	85,000+
Betfair Exchange	4.6	4.4	120,000+
BetBrain	4.3	4.2	45,000+

Our advice is that if you can use Decimal then do that because it is the quickest and simplest one to work out in your head. Well this is a good question and there is not one over riding best way.

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Confirm your bet, and wait to see if it is successful. If you win, and the starting price odds were higher than the odds at which you placed your bet, you will be paid out at the most favourable odds. To sum up, if you are betting for pleasure and to enjoy the experience of watching a match or a race a little bit more then the odds do not really matter. If you are looking to make a long run profit however then they are the only thing that matters, everything else is just noise. You are better off trying to learn where to find better odds bet best betting sites uk fast withdrawal than you are trying to figure out which bets will win.

Fractional Odds

Here at Legalbet we have also categorised the top betting sites and their features to make them easier for you to find. By Sport: Football Tennis Boxing Cricket Snooker Golf UFC Darts Greyhound Rugby Horse Racing Basketball Baseball Formula 1 Ice Hockey (NHL) Volleyball Cycling AFL By Payment Systems: PayPal Skrill Klarna Debit Cards Apple Pay Paysafecard Neteller Google Pay Prepaid Cards Revolut Phone Bill By Features: Cash Out £5 Minimum Deposit Minimum Bet Sizing Live Streaming Betting Exchanges Safest Fast Withdrawal Daily Free Games New Betting Sites Horse Betting Apps Football Betting Apps Virtual Sports Betting Sites By Events: Politics WWE MLB World Series Eurovision Super Bowl LIX World Cup By Esports: CS:GO Dota 2 League of Legends Valorant CS:GO Betting Sites with Paypal Sports betting odds are the representation of how much you will win (have returned) should your bet win. The less chance there is of something happening, the longer (or larger) the odds will be, because it happens less frequently you will win more when it does. If something is more likely to happen then the odds will be shorter (or lower) and you will win less when it happens. Odds change because of many factors but the two most common, and most logical, reasons are that something has changed to make a particular outcome now be more likely than before.

Oddschecker’s Verdict

A common example may be a football team the day before kick off is evens (Decimal 2) to win a match, but then on the morning of the game their star striker is ruled out because of an injury. Now without him the chances of them winning are not so great and therefore the bookmakers might raise the odds to 5/4 (Decimal 2.25) to reflect that. The other reason can be that nothing has obviously changed but for whatever reason people are betting large amounts again and again on one outcome more than any other. This will leave the bookmakers with an uneven book and result in a loss if that event comes to pass. Generally bookmakers like to hedge their bets so as to have a profit on all different outcomes and so they will cut the odds on that one to discourage further wagers and they will raise odds on the other outcomes to encourage bets there. You will find with experience which bookmakers offer the best odds on which sports, and then you can refine it still further to what bookmakers offer the best odds on either the favourites or underdogs for that sport, so that will be the first place to look. We provide lists of the best bookmakers on average on this site, but the best bookmaker for any one individual bet is a case of searching them all. You will also need some luck because just because the odds you see are the best at this time, wait a few hours and there could be better odds elsewhere. OR all odds are cut and you should have taken what you had. It is sensible to bet when the odds offer you value, but trying to find the BEST value possible is a fools errand. Check carefully to see which date and time you need to place your bet by.

10 Best Betting Apps - Ranking UK's Best Mobile Bookies - June 2026

To calculate your potential profit, you can multiply your stake by the result of the first number divided by the second number. For example, if you stake £5 at odds of 4/1, calculate 5 x (4÷1) = a profit of £20. Decimal odds are most commonly used outside of America and the UK. Decimal odds might look like 1.50, 3.25 or 6.00. The decimal number indicates your total return per £1 staked.

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For example, if you were to bet £10 on 3.25, your return would be £32.50 (£10 initial stake plus £22.50 profit). American odds are - as they sound - most commonly found in the USA. American odds will usually be a positive or negative number, such as -150 or +320. If the odds are a positive number, such as +320, this is how much profit you will receive if you stake $100. If the odds are a negative number, such as -150, this is how much money you will need to stake, in order to win $100.

Guide to Safe and Secure Online Betting Site Payment Methods

Every betting site is different and free to set their odds using any method they wish. It will vary from bookmaker to bookmaker and also probably from sport to sport and from market to market. It is likely that for some of the major sporting events they will have odds compilers able to make a tissue and offer their own odds. For other lesser sports and markets they will likely look at what the exchanges have priced it up as and copy that with a bigger margin. Then as bets start coming in each bookmaker will adjust the odds to balance their book as much as possible, and the fact that different bookmakers will have accepted different bets at any one time is part of the reason that they have differing odds. Customers usually need to wait until the day of the race to place Best Odds Guaranteed bets. Win Limits are the maximum amount of money that a bookmaker will pay out in case of a win. For example, if your bet wins £500,000 but the bookmaker’s Win Limit is £100,000, you will be paid £100,000 and forfeit the remaining £400,000. Best Odds Guaranteed is most often found on horse racing bets, but is also commonly found for greyhound racing and occasionally for other sports, too.

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There are three major odds formats, that is ways to display what your odds are. Traditionally in the UK the most common way has always been fractions, this is where the first number spoken is the amount you will win for every second number you stake. The two numbers put together is your total return. For example 8/1 means you will win £8 profit for every £1 you stake, the total return from the bookmaker will be £90 if you win. More common these days is the European system of using Decimals.

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This would display 8/1 simply as 9. Nine is the total amount you get back and has already included the stake in this calculation, but 8/1 and Decimal 9 are exactly the same thing. It is possible, although very unlikely, that you might want to use US odds. These are quite simple when it is odds against because for example 2/1 is +200, 4/1 is +400, 5/1 is +500, etc etc. It is simple to just think if how many % you multiply your stake by. Bet365 has great Best Odds Guaranteed offers for both horse racing and greyhound racing, as well as enhanced odds offers available for a variety of other sports markets.

Tool	Oddschecker	Betfair	BetBrain	Action Network
Form Guide	Basic	No	Detailed	Advanced
Probability %	Yes	Yes	Yes	Yes
Historical Odds	Limited	Full Market	Yes	Yes
Custom Dashboard	No	Yes	No	Yes

Betting sites offer Best Odds Guaranteed to provide punters with reassurance that they will receive a good value bet, and that the betting site offers better value to its customers than its competitors.

Payment Methods In The Best Betting Apps

The following sports regularly have high odds offers attached to them. Football is the sport most wagered on by the UK public (if counted by the number of bets placed) and it stands to reason that all bookmakers compete to have the most attractive odds. Below we list our partner bookmakers who on average have the lowest margins but remember that promotional offers can adjust the true odds, and are something to also bear in mind, rather than just the raw data. Betting on tennis is surprisingly popular, possibly due to the speed that the game can change and that when there are only two players taking part it is relatively simple to analyse. The odds that you can get are of course important and we list the best odds tennis bookmakers that we partner with below.

In-Play Betting

We have used the combined Mens and Womens outright markets and list how often these bookmakers were best or joint best priced on the top ten players. Horse racing odds are notorious for fluctuating on the day of the race, it is almost impossible to compare which are the best odds sites due to the fact Bookmaker A could be best one minute and Bookmaker B the next. As a rule on any horse other than the favourites then the exchanges will have the best odds by some distance. There are however factors such as being Best Odds Guaranteed, and if this is the case then your odds will always be the same as or higher than a non Best Odds Guaranteed price, assuming they both have the same Early Price. Usually, there is a process to follow in order to take advantage of Best Odds guaranteed promotions.

Bigger Returns on Winning Bets

First, create an account with your chosen bookmaker, which offers Best Odds Guaranteed. On this page, you should also find a list of the coming races that offer the Best Odds Guaranteed promotion. Navigate to your desired Best Odds Guaranteed sports page, and select the race that you wish to bet on. Make your selection, then enter your stake in the bet slip, which should pop up on the page. Occasionally, you may have to opt in to the Best Odds Guaranteed promotion on the best slip, but this is unusual. Finding one that doesn’t crash, glitch, or hide your withdrawal button is a different story. We’ve cut through the noise to rank the best betting apps in the UK.

Receive push notifications for line shifts on tracked games
Get alerts for new player prop or special market postings
Customize alerts based on specific sportsbooks or bet thresholds
Daily email digests summarizing the day's best betting values

We didn’t just look at who has the best TV commercials; we tested for: Speed: fast load times for live betting. Value: the best odds and welcome offers. Here is the only guide you need to bet safely on your mobile this year.

Track line movement history across multiple bookmakers
Set custom alerts for when odds reach your target value
Filter comparisons by sport, league, and bet type
View the implied probability calculated from the displayed odds
Identify arbitrage opportunities across legal sportsbooks

All the apps listed on this page are from reputable bookmakers who are fully licensed and regulated in the UK. They are safe, secure and compliant with UK gambling regulations, meaning we know they are trustworthy and play by the rules.