Football accumulator calculator: bet accumulator odds, returns and the chance every leg wins

How an accumulator calculator works

An accumulator links two or more selections into one bet. Every selection has to win for the bet to pay, and the odds of the whole bet are the product of the odds of each one. The accumulator calculator does that multiplication and then applies your stake.

Three selections at 2.0 each (evens) give 2 times 2 times 2, which is 8.0. A ten pound stake returns eighty pounds including the stake, a profit of seventy. If one selection loses, the return is zero and the stake is gone.

That structure is why an accumulator pays so much for a small stake and why it so rarely lands. Each added selection multiplies the potential return and multiplies the ways the bet can fail.

How to use the bet accumulator calculator

Enter your stake first. Then give the odds for each selection as a fraction such as 11/10, as evens or as a decimal like 2.5, and add or remove selections with the buttons below the list. Odds typed as +150 or -200 are also read.

The Result menu on each selection lets you test an outcome. Set a selection to Lost and the return falls to zero. Set one to Void and it drops out of the bet, which is how a non-runner or a postponed match is treated: an accumulator on four selections with one void is settled as a treble.

The figures show the combined odds, the return and the profit or loss. They also show the implied chance of every selection winning, found by multiplying the implied probability of each price. It is usually a smaller number than people expect.

Football accumulator calculator: a worked example

A football coupon with four results at decimal odds of 1.80, 2.10, 1.60 and 2.40 combines to 14.51. A ten pound stake would return 145.15 if all four win. Each of those results might look likely on its own, but the chance of all four landing together is far lower, around nine per cent if each is a 55 per cent shot.

The table shows how quickly the odds grow, and how the chance falls. Adding a fifth selection at the same price takes the combined odds from 16 to 32, and the chance from about six per cent to about three.

Horse racing accumulator calculator and each way

The same sums apply to racing. A horse racing accumulator needs every horse to win. If you place each way, the bet is two accumulators, one on the win and one on the place, and the maths is different because the place part uses a fraction of each price. The each-way calculator handles each way doubles, trebles and accumulators, including Rule 4 deductions.

For a win-only accumulator on horses, the calculator on this page is enough. Remember that a non-runner makes its leg void and the bet is paid on the others.

The accumulator and the bookmaker’s margin

Every price in a market includes a margin, the bookmaker’s share built into the odds. In a single bet the margin applies once. In an accumulator it applies to every leg and the effect compounds. Four legs each with a five per cent margin leave the bettor with roughly a one in five disadvantage on the whole bet, before any luck.

That is not a reason never to have an accumulator. It is a reason to keep the stake small and to treat the bet as entertainment. Offers such as accumulator insurance or a boost on a long accumulator exist because bookmakers know how popular the bet is. Read their terms, since they often have minimum legs, minimum odds and a cap on the payout.

Choosing selections for an accumulator

Pick fewer selections than you want to. A treble on three reasonable chances is a different bet from a ten-fold on every game of the day, and the chance that every selection lands falls steeply with each addition.

Avoid combining selections that depend on one another. Some bookmakers will not accept related contingencies in an accumulator, and the system settles bets on the rules published in the terms.

Check the odds on every leg at more than one bookmaker if you can. A small difference in price on each leg compounds across the bet, and the same coupon can return noticeably more at one operator than another. Our main comparison and the football betting sites guide list ten UK-licensed bookmakers to start from.

Cash-out, partial wins and void legs

Many bookmakers offer cash-out on accumulators, which settles the bet early for a figure calculated from the live market. If three of five legs have won and two are still to play, the cash-out reflects the odds of the remaining legs. Cash-out is offered on selected bets only and can be withdrawn at any time.

A void leg removes a selection from the bet and the rest are paid at their own odds. A leg that loses ends the accumulator. Some operators offer a rule where a single losing leg is refunded, as a promotion, with its own conditions. That is not part of the calculator.

If you are working out a return after a result, set each selection to its outcome and read the figure. It is the quickest way to check a settlement against your own sums.

Accumulator types by number of selections

A double has two selections, a treble three, and a four-fold four. After that bookmakers call them five-fold, six-fold and so on, up to ten-fold and beyond. Some operators name the bets by the number of legs and others call them all accumulators or “accas”.

The jump in difficulty is bigger than it looks. Doubling the number of selections from three to six squares the combined chance of success. If each leg is a 60 per cent chance, a treble comes in about one time in five, and a six-fold about one time in twenty-one.

Longer accumulators attract the most promotional attention, with boosts and insurance offers, because their odds look large. The calculator makes it plain how fast the potential return grows and how slowly the chance of landing it shrinks.

Placing an accumulator step by step

Add your first selection to the bet slip by clicking its price. Add the others from different matches or races. The slip detects that you have more than one selection and offers the accumulator as a bet type, often with the combined odds already calculated.

Check the combined odds against the calculator on this page. Enter the same prices, and if the figures differ, the slip is using different odds, applying a boost, or has been repriced since you added the selections.

Enter your stake and confirm. In-play accumulators may be delayed or repriced. After the bet is placed, you will find it in your open bets, with cash-out if it is available.

Accumulator offers and what to check in their terms

Accumulator insurance refunds your stake, usually as a free bet, if one leg lets you down. Accumulator boosts add a percentage to the winnings of a qualifying bet. Both are subject to a minimum number of legs, a minimum price per leg, a maximum stake and a cap on the extra.

Look at how the refund is paid. A refund in free-bet credit is different from cash, because the free bet usually does not return its stake. Look at the expiry date, and at whether a cashed-out bet qualifies. Some terms exclude bets placed using bonus funds.

None of this makes an accumulator a better bet. The offer reduces the cost of a loss or raises the return of a win, and the odds of the legs landing are the same.

Common accumulator mistakes

Adding one more leg because it looks safe is the usual one. A one-in-ten shot becomes a nine-in-ten shot only in the imagination, and each added leg is a new way for the bet to fail.

Misreading a void leg is another. A postponed match is not a loss, and the accumulator is paid on the remaining legs, which means the odds and the return are lower than the original bet slip suggested.

A third is leaving the bet unchecked after a late kick-off or a non-runner. Look at the open bets page once the events are underway, and compare with the calculator if a figure surprises you.

The last is the accumulator as a habit. A weekly coupon at a small stake can be entertainment. A stake that grows each week to recover last week’s loss is not, and that is the point to stop.

Responsible betting on accumulators

The appeal of a big return for a small stake is the reason accumulators are risky. A coupon that almost lands feels like a near miss, and it encourages a bigger stake on the next. Set a limit before you place the bet, and keep to it.

GambleAware gives free, confidential support, and GamStop blocks access to every licensed UK online gambling site for a period you choose. Both are linked in the footer of every page. Betting is for people aged 18 and over. For fractional, decimal and American odds, see the odds converter. To cover several selections with smaller bets instead of one accumulator, try the bet calculator for a Lucky 15, Trixie or Yankee, or the dutching calculator to split one amount across several selections.

This accumulator odds calculator multiplies the decimal prices of every leg, so it also works as a football accumulator calculator for a Saturday acca of match results. As a bet accumulator calculator it shows the combined odds, the return on your stake and the chance that every leg wins. Use the accumulator odds calculator when you want the numbers before you decide, and the bet accumulator calculator and the football accumulator calculator give the same figures for the same prices.