Surebet Calculator

Written by: Alex Windsor
Fact checked by Brian Webb  
Updated: July 12, 2024

No matter how deep your knowledge of sports betting runs, or how well you know each team in any given category, there is always a degree of risk associated with “conventional” wagering. We say “conventional” because there is one exception, which we call sure betting or arbitrage.

Surebet calculator - calculate stakes

Enter below all the odds, and then click 'Calculate'.

1 X 2

Entered odds makes surebet with profit

To achieve this profit, regardless of the match result, bet following stakes on each outcome

1 X 2
Net income:

Enter below all the odds, and then click 'Calculate'

1 2

Entered odds makes surebet with profit

To achieve this profit, regardless of the match result, bet following stakes on each outcome

1 2
Net income:


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In any given sports event played to a conclusion, there can be only one of the two possible outcomes – win or lose. Oddsmakers assign odds to both outcomes, you place a wager on the one you deem is more likely to occur, and you’ll get paid if your prediction is correct.

Sure betting is a simple concept where you’ll place a bet on both outcomes, ensuring that you’ll win at least one of them. Small but consistent profits can be made if you know how sure betting works and how large your wagers should be to guarantee returns. That’s where our SureBet calculator comes into play.

What Is Sure Betting?

First of all, it’s usually impossible to place sure bets at a single bookmaker site. This is either directly prohibited by the bookie’s terms and conditions or the odds are constructed in such a way that profits cannot be made no matter how wagers are scaled.

A proper sure bet is placed at several bookies, at least two. You find betting sites that list the same event, pinpoint the best odds for both outcomes and place your wagers.

Since odds on opposing outcomes are rarely (if ever) even, you’ll need to determine how much you should stake on each outcome to secure our profits. Our BettingTools SureBet calculator was designed to help you instantly discover optimal bet sizes, so let us explain how its features work.

Using Our Surebet Calculator

Our Surebet calculator boasts simple yet sophisticated features that can be used to determine ideal sure bet opportunities and wager sizes. Whenever any data is input in the fields, the remaining boxes will automatically update to match the new circumstances.

In the following sections, we’ll take you through the core features and benefits of our Surebet calculator and explain how to use it, so let’s start from the top.

Choose the number of selections you wish to play

The first step to using this tool is choosing how many outcomes you want to bet on. The default number is two, which is suitable for basic arbitrage betting on two directly opposed outcomes, typically for moneyline (win or loss) or totals (over or under).

If your favorite sports games can end in a “tie” (e.g. soccer), you can choose to include three outcomes or tap “4 or more” if you want to bring additional options into the mix, such as opposing moneylines and spreads.

Note that the more selections you include in your Surebet, the more you’ll need to wager to guarantee profits. We recommend sticking to two-outcome arbitrage for beginners but feel free to experiment with other options.

Input the odds and your desired wagers

Our Surebet tool is versatile enough to provide an accurate estimate of anticipated profits based on how much you’re willing to wager or recommend an ideal bet size for the provided odds.

You only need to input the odds for each outcome in the first column and write how much you’re willing to spend per stake or in total in the second column.

You can copy the odds from any UK bookie site. As for the stake, inputting the total amount of cash you’re willing to place on your Surebet at the lowest box; doing so will instantly divide the bankroll into optimal proportions to guarantee profits.

Alternatively, you can place individual inputs for each outcome, and our calculator will give you an accurate estimate of anticipated profits. If the numbers under “Profit” are coloured in red, the wager you’ve input will generate a loss, so we recommend typing your total stake at the lowermost box.

Optionally, enable and input commission rates

Some bookies include commission fees in the prices of their odds, but some charge commissions after the wager has been placed. If your preferred bookmaking sites follow the latter concept, we encourage you to tap the “Show Commissions” box below the calculator to enable the Commission Input column.

Knowing that different bookies use different commission rates and that you’ll likely choose at least two sites when searching for sure betting opportunities, we’ve included separate commission boxes for each outcome.

Analyze expected profits and make adjustments

After you’ve filled out the entire table, the estimated profits will be displayed automatically.

In the top right corner, you will see anticipated returns expressed in percentages; below is the “Profit” column, which shows you how much you’ll earn in the selected currency.

The British pound sterling is the default, but if you’d rather place wagers in a different currency, tap the Currency boxes to switch to EUR, USD, BRL, NOK, SEK, or other available currencies.

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How Our Surebet Calculator Can Help

As avid punters with decades of combined experience, we understand that locating the best surebet odds and opportunities is difficult and time-consuming enough in and of itself.

We don’t want you to waste precious hours figuring out how much you should stake on each event to break even or make pocket-change profits. This free-to-use betting calculator was designed to ensure you can instantly determine the best value stakes on any odds you input.


  • How does sure betting work?

    Sure bets are stakes placed on correlated and directly opposed outcomes, as in “win” and “loss” in events played to a conclusion.

  • Do sure bets always win?

    Sure betting is meant to mitigate a large chunk of risk from sports wagers. It eliminates all risks of losing in moneyline betting and keeps risk at a bare minimum in other types of sports betting.

  • What types of sports betting are suited for sure betting?

    Straight moneyline wagers are ideal for sure betting, but it can also work with totals or events with more than two outcomes, such as over/unders or spreads.

Alex, a ten-year iGaming industry veteran and Managing Editor at BettingTools specializes in sports betting and betting tools. He also provides insightful reviews, ensures the accuracy of all offers, and maintains content quality helping you make informed choices. Combining professional expertise with a passion for football and soccer, Alex ensures we offer you a reliable resource, focusing on betting tools to assist with odds, accas, and other betting strategies.