Acca calculator
Work out what your accumulator pays: add your selections, enter decimal or fractional odds, and mark any leg that was void or lost.
4 selections · implied chance all win: 5.1%
How the acca calculator works
An accumulator (acca) links several selections into one bet. The odds multiply, so the return is stake × odds 1 × odds 2 × … × odds n — but every selection must win.
Worked example
A £5 four-fold on 2.10, 6/4 (2.50), 1.85 and evens (2.00): combined odds 2.10 × 2.50 × 1.85 × 2.00 = 19.43, so a winning acca returns £97.13 (£92.13 profit).
- Void leg: counts as 1.00. The same bet with the 6/4 leg void is a treble at 7.77, returning £38.85.
- Lost leg: the whole bet loses, whatever the other results.
- Doubles, trebles and folds: a double is a 2-leg acca, a treble 3 legs, a four-fold 4 legs, and so on — the maths is the same.
Accas pay well because they rarely land: the implied chance shown under the result is simply 1 ÷ combined odds. For our daily accumulator built from the model's picks, see the acca of the day; for single bets and system bets use the bet calculator.
FAQ
How do you calculate an accumulator?
Multiply the decimal odds of every selection together, then multiply by your stake. A £10 treble at 2.00, 1.50 and 3.00 has combined odds of 9.00 and returns £90 (£80 profit) if all three win.
How do I convert fractional odds for an acca?
Add 1 to the fraction: 5/2 becomes 2.5 + 1 = 3.50, evens (1/1) becomes 2.00, 4/5 becomes 1.80. The calculator accepts fractional, decimal and American odds and converts them for you.
What happens if one selection in my acca is void?
A void selection (postponed match, non-runner) is treated as odds of 1.00, so the acca carries on with the remaining legs: a four-fold becomes a treble. If every leg is void, your stake is returned.
What happens if one selection loses?
The whole accumulator loses. That is the trade-off for the bigger odds: every counting selection has to win. Some bookmakers offer acca insurance, but it is a promotion, not part of the bet maths.
Why is the implied chance so low?
Because the chances multiply too. Four selections at 2.00 each pay 16.00, which the prices say happens about 6% of the time — and the bookmaker margin in each price makes the true chance a little lower still.
18+ · Calculators are for information only. Bet only what you can afford to lose — responsible gambling.