Accumulator Calculator

This accumulator calculator calculates the potential payout for a sports bet that combines multiple selections or legs with different odds.

Luis Anaya

Luis Anaya

Jan 15 2021

Accumulator Calculator

Use The Calculator

This accumulator calculator works out the combined odds and returns of a bet that contains multiple legs. All you need to do is enter total stake you would like to risk and the odds of each bet in your series of bets. Each bet that makes up your accumulator is also known as a "leg". The calculator is setup for accumulators that have two legs by default. Bets with two legs are also known as "doubles". It is possible to construct an accumulator with more than two legs by pressing the "Add" button. You can press this as many times as you need to in order to build your accumulator.

Once you have added the odds for each leg in your accumulator you are ready to press the "Calculate" button. Instantly you will see the potential returns that will be paid out if every leg in the accumulator wins. The profit is simply the total returns minus the stake.

accumulator calculator




A winning accumulator bet of 2 bets with the following fractional odds:

  • Bet 1: 1/1
  • Bet 2: 1/1

Will produce £40 in total results, and £30 in total profits.

returns (£)
profit (£)

What Is An Accumulator Bet?

An accumulator is a type of bet where you need multiple selections to win in order for your bet to payout. There is no set number of selections an accumulator must have. You could have three selections, known as a treble, four selections known as a quadruple, or 8, 12 or even 20 selections. It really is up to you.

For example, you might have a hunch who will win all of the following:

  • English Premier League
  • Scottish Premier League
  • FA Cup
  • Champions League
  • Europa League
  • World Cup

Rather than betting on each match individually by placing single bets, you could place one accumulator bet. This example accumulator has 6 selections, or legs. In order to earn a payout all 6 legs must win.

Each time a leg wins, the returns are lumped onto the next leg of the accumulator. This continues until either a leg of your accumulator lets you down, or all legs win and your bet pays out.

1English Premier League - Chelsea41.00
2Scottish Premier League - Celtic1.44
3FA Cup - West Ham21.00
4Champions League - Man City3.50
5Europa League - Arsenal6.50
6World Cup 2022 - England8.00
 POTENTIAL RETURNS for £1 Stake:£45,1301.76

How Are Accumulator Returns Calculated?

The returns for a winning accumulator are calculated by multiplying the odds, or price, of each leg together to give one overall price for the accumulator. For example, if you are a Tottenham fan and you are feeling confident after 4 games of the 2022/23 Premier League season you might fancy placing the following accumulator:

  • Tottenham to win the Premier League @ 13.00 (12/1)
  • Harry Kane to finish top goalscorer @ 6.50 (11/2)
  • Steven Gerrard to be the next Manager to leave @ 3.00 (2/1)
  • Tottenham to win away at West Ham @ 2.00 (1/1)

The odds for this fourfold accumulator are calculated as follows:

13.00 * 6.50 * 3.00 * 2.00 = 507.00

Assuming a £10 stake, the returns are calculated as:

Odds x Stake = Returns
507.00 x £10 = £5,070

Finally the profit is calculated by subtracting the stake:

Returns - Stake = Profit
£5,070 - £10 = £5,060

If you only have fractional odds, use this odds conversion calculator to convert to decimal odds. Or alternatively, if you like a little maths, you can use the fractional odds directly. To start with we need some terminology. A fraction is made up of two parts, the top number and the bottom number. The top number is called the numerator and the bottom number is the denominator.

Numerator / Denominator

So if we have odds of 10/1, then 10 is the numerator and 1 is the denominator.

Before we can multiply our fractions together it is easiest if they all have the same denominator. So in our example we need to work out the equivalent fraction for 11/2, if we change the denominator to 1. This is easy:

11/2 = 5.5

So we can rewrite this fractional odds price as 5.5/1.

The other difference between fractional odds and decimal odds is that the returns calculated with decimal odds includes the stake, eg:

6.5 x £10 = £65

But the stake is not included when calculating with fractional odds:

11/2 x £10 = £55

This is really important with an accumulator because the full returns from each bet, including your initial stake, get rolled over to the next leg. So if we are using fractional odds, once we have standardised the denominator we need to add to the numerator to make the calculation reinvest our stake for each bet:

((12 + 1)/1) x ((5.5 + 1)/1) x ((2 + 1)/1) x ((1 + 1)/1)

Which is the same as:

(13/1) x (6.5/1) x (3/1) x (2/1)

Which is the same as:

13 x 6.5 x 3 x 2 = 507

Which is exactly the same calculation as used when starting with decimal odds.

When Should You Place An Accumulator?

Statistically speaking, most people will lose when placing bets. This is because bookmakers have the odds weighted in their favour. If the England football team is priced at 2/1 to win a match the price implies that if the match were played 3 times, 2 from the numerator + 1 from the denominator, England should win once and fail to win twice. But for the bookmaker to offer a price of 2/1 they probably think England are statistically less to win one in three games against this opponent in the given conditions, eg home versus away match.

With the example accumulator above the odds were much larger at 507.00 or 506/1. That means statistically we expect this bet to win only once in 507 attempts. But keep in mind the bookmaker weights the odds in their favour and they have done that for each leg in your accumulator. This means that bookmaker probably thinks your accumulator will win far less frequently than once in every 507 attempts.

Therefore, the following ideas might help you decide when to place an accumulator:

  • You just fancy having a fun bet and it doesn't really matter if you lose
  • You intend to place so many similar accumulators over time, hundreds if not thousands, that in the long run you can expect to win some of them
  • You have reason to believe the bookmaker has made some pricing errors, the prices are actually weighted in your favour and you have a big enough betting bank to accept a lot of losing accumulators before landing a winning accumulator

Where Can You Place An Accumulator?

Most bookmakers, both online and those on high street will let you place accumulators. Historically it has not been possible to place accumulator bets on betting exchanges, but this is now changing with accumulators being accepted on a limited range of markets.

Famous Accumulators

Every now and again a lucky punter lands a huge accumulator. In 2001 Mick Gibbs stuck 30p on a football accumulator and won a massive £500,000 when he successfully called the winners of 15 football championships, with the final leg hanging on a penalty shootout of the European Cup between Bayern Munich and Valencia.

Another punter constructed a 22 leg accumulator, staking £49.50 to try and win £1,500,000. Having seen the first 19 legs win this bet just needed Barcelona to beat Real Sociedad, Tottenham to beat Manchester United, Liverpool to beat Stoke. Shortly before the Barca match kick off the punter cashed out for £53,000. This turned out to be a masterstroke with Barcelona failing to beat Real Sociedad, which would have made the accumulator worth £0.

Frequently Asked Questions

Have a question about this calculator? See our list of frequently asked questions below.

What is an acca?

Acca is an abbreviation of accumulator.

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