Odds Comparison Sites

For example, you can earn about £8 profit from a £10 free bet. My comprehensive and free Matched Betting Guide will take you through the basic concept with a complete walkthrough of your first bookmaker promotion.

Feature	Description	Availability
Odds Alert	Notifies when odds hit a target	Premium
Profit Calculator	Calculates potential winnings	Free
Bookmaker Filter	Shows odds from selected sites only	Free
Odds Movement Graph	Visual history of price changes	Premium

You’ll even earn about £15 in the process. Beyond that, my Matched Betting Academy details how to profit from every UK bookmaker’s ‘welcome’ offer, all for free.

Our Top Tips When You Use Our Odds Calculator

My Bonus Rollover Guide has full details. Click the ‘underlay‘ or ‘overlay‘ headings to set the slider to a position where your bets will result in a reduced profit on either the bookmaker or exchange side and a higher profit bet sports betting sites with welcome bonus on the opposing side. My Reload Offers page contains details of every profitable bookmaker promotion currently available. Filter by ‘Bet X, Get X’, ‘Bet X, Get X if…’, ‘Free Bet’ or ‘Risk-Free Bet’ offer types for offers you can do using this calculator. The calculator at the top of the page does all these calculations for you (and more!). Designed and tested by matched betting experts, it also provides techniques to make money from extra place offers, 2UPs, price boosts, and other recurring existing customer offers, all logically structured and well-paced. A bet builder is a multi-leg bet on a single game of football. For the bet to win, each leg must be successful and is usually made up of three or more separate legs. For example, you could select Man City to beat Man United, Erling Haaland to score, Phil Foden to have a shot on target and Bruno Fernandes to be carded. This is a great way of lengthening the odds of your bet as more is required for the bet builder to win. The oddschecker bet builder tool is simple to use and allows you to select multiple legs for a single game of football and compare the best odds for that particular bet. Currently, all major competition's matches are supported by this oddschecker bet builder tool, such as the Premier League, FA Cup, and Champions League.

Best Snooker Odds

For example, a bonus with a three times rollover requirement means you must wager it three times before you are allowed to withdraw it as cash). For bonuses, you must bet until you either meet the rollover requirement or lose at the bookmaker and win at the exchange. My Bonus Rollover Guide gives full details. Again, input your stakes, odds and commission to get your lay stake. Some bookmaker promotions will return your initial stake (the ‘free’ one they give you), although most will not.

The Old Way

If the promotion terms say your stake will be returned, check ‘Stake returned’ to adjust the calculations accordingly. Some promotions will give you money back if your bet loses. Select this mode to factor in the cashback amount from losing bets. The calculator uses Smarkets colours (green for back, blue for lay) by default. For Betfair colours (blue for back, pink for lay), you can switch in the main website navigation – under the palette icon on non-mobile devices.

Bet365 Best Odds Guaranteed

Use part lays when you have already placed part of your lay bet at the exchange, but more is needed to give an equal profit on every outcome. This instance could arise if you made a mistake with your first lay bet. Enter the part lays you have already placed, and the calculator will give the lay stake required to equalise the profit on all outcomes. Use the slider to weigh your profit towards a win at the bookmaker or the exchange. Doing so can give a higher profit on particular outcomes, which you may want to do to keep things exciting, or if you wish to retain a higher portion of your bonus when completing rollover requirements. You can select any Premier League match to build your bet builder for by choosing from various markets such as Anytime Goalscorer, Player Shots, and Total Corners. Once you have selected the legs you wish to bet on, the oddschecker tool will provide a list of the best odds from each bookmaker.

What Bookmakers Offer the Best Odds?

However, if you’re curious or need to know how to calculate lay stakes for matched bets manually, here are the formulas. These formulas give an even profit no matter the outcome of your bets. Lay stake for qualifying betLay stake = (back odds * back stake) / (lay odds – lay commission) Lay stake for free bet if stake not returnedLay stake = (back odds – 1) / (lay odds – lay commission) * free bet value Lay stake for free bet if stake returnedLay stake = (back odds * free bet value) / (lay odds – lay commission) Matched betting is a way of exploiting bookmaker promotions to make a predictable profit from each one. By covering all outcomes of an event, you can meet the requirements for claiming free bets or bonuses while your bets cancel out, resulting in an overall profit or loss close to breakeven. You can then repeat the process to extract about 80% of the free bet amount. You can then select which bookmaker you would like to bet with, and then click the odds to head to their site and place the bet. Odds comparison is a vital part of any punter's philosophy. Why place at bet at 4/1, when 7/1 is available?

• Access requires registration but is typically free for basic features
• Premium tiers offer advanced analytics and no-ad experience
• Partnership deals with bookmakers may influence featured listings
• Revenue generated through affiliate commissions on referred bets
• Some tools offer freemium models with limited real-time updates

The oddschecker bet builder tool is the only tool on the market that compares the odds on bookmaker's bet builder odds.

How do you calculate fractional odds?

A +300 means you have to bet £100 to win £300. If your bet wins the return would be £400 (£100 stake plus £300 winnings). Here is a handy resource for comparing and converting odds between the fractional and decimal betting formats: Odds on simply means an event is more likely to happen than not. It is the opposition of odds against. Any odds-on price carries an implied probability higher than 50%.

🔍 What is implied probability?

Any odds-against price has an implied probability below 50%. A bet of exactly evens has an implied probability of 50%, and your winnings will be equal to your stake. In fractional odds, an odds-on wager will see the smaller number on the left than the right. This is flipped for odds-against bets. For instance, 4/6 is an odds-on price with an implied probability of 60%.

Fractional Odds: The UK and Horse Racing

Flip those odds to 6/4 and the implied probability drops to 40%. When it comes to payouts, an odds-on bet simply means you will win less than you staked. An odds-against wager means you will have larger potential winnings than you stake. So if you placed £4 on England to beat France at 6/4, you would win £10 if the Three Lions were victorious. Learn how to use this calculator to profit from bookmaker promotions in my complete matched betting guide. Just place your selection in to the tool above, compare, get the value and bet!

Football Leagues Included

This calculator takes the manual work out of matched betting by calculating the stake you must place at the betting exchange (your lay stake) to get as close to breakeven as possible on your qualifying bets. It also maximises profit when placing your free bets. The amount you need in your exchange account (liquidity) should your back bet win. The distribution of your money between your bookmaker and exchange accounts in the event of each outcome. Your potential profit from a free bet at the current odds.

Real-time Price Comparison

How adjusting odds and stakes can impact your overall profit or loss. How you can underlay or overlay – weighing your profit in favour of a particular outcome. How to handle part lays – where you have already placed one or more lay bets but not to the total required to give an even profit between outcomes. This calculator is for making a profit from a range of offer types, the most common being ‘Bet X, Get Y’. I recommend working through my Matched Betting Guide so you can fully understand the matched betting process and its use.

What Are the Differences Between Online and Offline Odds?

Depending on your stage when profiting from a bookmaker promotion, the calculator has a few different modes. Use this mode when placing your initial bets to claim your free bet, risk-free bet or bonus. Input the stake and odds from your selected market at the bookmaker (back bet), along with your odds and commission at the exchange (lay bet), and it will show you the amount you need to stake at the exchange (lay stake) to make the minimal loss. Use this mode when turning your free bet into a profit. It works for free bets and bonuses (A bonus is a free bet that needs to be ‘rolled over’ a set number of times before you can withdraw it. The best thing about a bet builder is the freedom it gives the bettor to choose whatever markets and how many legs they wish to bet on. You could bet on anything from three to as many as 15 legs if you want to, and watch on as you look for each leg of your bet come in! Another huge advantage of bet builders is that they are a great way to enhance the odds of your bet. By combining all your bets into one single bet builder, you can significantly enhance your odds as opposed to placing various single bets. Although bet builders are harder to win, the reward for being successful is much greater. In most instances, yes you can cash out your bet builder. However, for bookmakers to offer cash out on bet builders, all of the selections in your bet must still have the possibility to win or the market must still be open.

• Coverage of major sports like soccer, basketball, football, and tennis
• Specialized markets for esports, politics, and entertainment
• In-play/live betting odds comparison during events
• Futures and outright winner markets for tournaments and seasons
• Player prop bets and same-game parlays from supported books

Most bookmakers offer bet builder cash outs, but it is worth checking beforehand to make sure. For example, if you selected Phil Foden to score for Man City but he was subbed off, this market would then be closed which would eliminate the cash out feature for the whole bet builder.

• Integration with bankroll management and bet tracking software
• APIs for developers to build custom solutions using odds data
• Export functions to download odds data for personal analysis
• Sync with spreadsheet programs for advanced bettors
• Compatibility with betting exchange platforms like Betfair
• Future roadmap includes AI-powered value bet recommendations

Bet builders and Accumulators, or Accas, are both very similar as they combine multiple legs into one single bet. However, the main difference is that bet builders combine various selections from the same game, whereas as Acca combines different legs from different events. For example, you could combine five different teams from separate games to win in one acca, and each leg would have to be successful for the bet to win and the bookie to pay out. In comparison to a bet builder, both are equally challenging as they both require multiple successful legs for the overall bet to win, but again, gives you better odds like a bet builder.

• Ensuring data is sourced directly from bookmaker APIs for accuracy
• Clear disclosure of any commercial relationships with listed books
• Promotion of responsible gambling with links to support resources
• Compliance with regional regulations on gambling advertising

Oddschecker is an odds comparison website and a great tool for any serious investor whether you are betting on horses football or sport.

Comparison Tool	Number of Bookmakers	Notable Exclusions	Regional Focus
OddsPortal	200+	BetOnline (US)	Global
BetBrain	90+	Local Asian Books	Europe
Oddschecker	50+	Pinnacle (some regions)	UK, Australia

If example you are betting on horseracing then select the horse racing tab on the left-hand side.