Bet calculators are straightforward when applied to single wagers, but things get a little more complicated when an extra variant is added. A double bet calculator is its own entity, specifically designed to calculate bet returns on any double bet.
Calculating betting profits on doubles is easy using a double odds calculator, one of which can be found at the top of this page. We’ll highlight the value of these calculators throughout the page, but first, let’s define what a double bet is.
What is a Double Bet?
A double bet is any bet that wagers on two separate occurrences within the same bet slip. As opposed to a single bet — which concerns one outcome only — a double bet can only win if both selections of the bet win.
Doubles can be thought of as the smallest possible multiple bet. There are plenty of other multiple wagers, such as trebles and accumulators. These bets all work in the same way: punters will only win their multiple if every selection within the bet wins.
Both selections within a double will have their own odds; to calculate potential returns on double bets, these odds are multiplied together. As a result, double stake odds are often much larger than simple straight bets, and therein lies the appeal. The catch is that instead of betting on one outcome, placing a double requires two successful predictions. Doubles are therefore harder to win than singles, depending on the odds of course.
How to Use the Double Bet Calculator
Since doubles multiply two odds markets together, it’s easy to see how a betting calculator for doubles can be useful. Here’s a step-by-step guide on how to make use of a double bet calculator.
- Pick your double
Head to your betting site of choice and select the sport and market you want to bet on. It’s best to stick to markets you know and to conduct a bit of research beforehand, particularly if this is your first bet.
- Head to the top of this page
Our double bet calculator is available at the top of the page. Once you have the odds of your selections, you can make use of our sports betting odds tool.
- Enter the stake and the odds
For a betting odds calculator to work, punters must enter the stake and the odds. In the case of a double, there are two sets of odds to submit before a calculation can be made.
- Place your bet
If you’re happy with the stake and the potential returns, head to your bookmaker and fill out the bet slip.
Example of a Double Bet Calculation & Return
A double bet payout calculator will first multiply the odds of each selection. In essence, this process generates a single set of odds, which is then multiplied by the stake. The double bet payout formula therefore looks like this:
Odds 1 x Odds 2 x Stake = Return
Let’s apply this formula to the favourites to win the men’s and women’s singles at the 2025 French Open, Carlos Alcaraz and Iga Swiatek.
| Stake | Bet 1 Odds (Alcaraz) | Bet 2 Odds (Swiatek) | Potential Winnings | Total Return |
|---|---|---|---|---|
| £10 | 2.5 | 1.57 | £29.25 | £39.25 |
Stakes are returned on all winning bets, which is why there are two figures at the end. The total return indicates the total amount to be paid back to winners, including the original stake.
If you’re finding the odds confusing, remember you can change how they’re presented in the settings of your betting account. We’re using decimal odds here, but you can change to fractional or American if they’re easier for you to read.
Common Mistakes When Using a Double Bet Calculator
To avoid some of the common mistakes people make with a double bet calculator, make sure you:
- Enter the correct odds;
- Enter the correct stake;
- Understand how the odds of each selection compound;
- Use odds presentations you can read, whether it’s decimal, fractional or American;
- Know the difference between total winnings and total return profit.
FAQs About Double Bet Calculations
What happens if one of the two bets loses?
If one of the two selections of a double loses, the whole bet loses.
How do odds in a double bet affect my overall return?
The odds of both selections in a double are multiplied together to generate the overall odds of the bet. The stake is then applied to this overall odds figure to generate larger returns than singles.
Are double bet calculators accurate?
Yes — double bet calculators are a mathematical certainty.