Odds Format
Selections (2)
Stake ($)
Each-Way
Returns
Enter at least 2 valid odds and a stake to see returns.
What Is It?
An accumulator (also known as a parlay or multi-bet) combines two or more individual selections into one bet. All selections must win for the bet to pay out. The odds multiply together, creating potentially large returns from small stakes.
The Accumulator Calculator lets you add as many selections as you want, enter their individual odds, and instantly see the combined odds and potential returns. It also supports each-way accumulators, where both the win and place parts are accumulated separately.
This tool is invaluable for weekend football accas, horse racing multiples, or any scenario where you want to chain together several bets for a bigger payout.
How to Use
1
Choose odds format
Decimal or Fractional.
2
Add selections
Enter a name (optional) and odds for each leg. Start with 2; click “Add Selection” for more.
3
Enter your stake
The amount wagered on the accumulator.
4
OptionalEnable each-way
Toggle on and set the place fraction (1/4 or 1/5) and number of places.
5
View combined results
Combined odds, potential returns, and profit are shown automatically.
Formulas & Data Sources
Combined Odds = Odds1 x Odds2 x Odds3 x … x Oddsn
Return = Stake x Combined Odds
Profit = Return – Stake
Each-Way (place leg):
Place Odds per selection = (Decimal Odds – 1) x Fraction + 1
Combined Place Odds = PlaceOdds1 x PlaceOdds2 x … x PlaceOddsn
Total E/W Return = (Stake x Combined Win Odds) + (Stake x Combined Place Odds)
Total E/W Stake = Stake x 2
All odds are multiplied in decimal format internally. Fractional inputs are converted before calculation.
Real-World Scenarios
1
Weekend football treble
BeginnerYou back three Premier League teams: Team A at 1.80, Team B at 2.10, Team C at 1.65. Stake: $10. Combined odds = 1.80 x 2.10 x 1.65 = 6.237.
Potential return = $62.37 | Profit = $52.37
All three must win.
2
Horse racing four-fold each-way
IntermediateFour horses at odds of 5.00, 8.00, 3.50, 6.00 with a $5 each-way stake (total $10). The win accumulator pays huge (combined odds = 840.00, return = $4,200). The place accumulator uses 1/4 odds fractions, giving a separate (smaller) payout if all four place.
3
Checking if the payout is worth the risk
AdvancedYou have a 7-fold acca at combined odds of 45.00. A $5 bet returns $225. But the probability of all 7 winning is low. Use the calculator to see the numbers, then cross-reference with the EV Calculator to decide if the expected value justifies the wager.
Frequently Asked Questions
QIs there a limit on the number of selections?
No. You can add as many legs as you like. The calculator dynamically grows as you add selections.
QWhat happens if one leg loses?
The entire accumulator loses. All selections must win for a payout (unless your bookmaker offers acca insurance or similar promotions).
QHow does each-way work on accumulators?
Each-way accumulators run two separate accas: one at win odds and one at place odds. Your stake is doubled. If all selections win, you get both payouts. If all place but some don’t win, you only get the place accumulator payout.
QCan I mix sports in one accumulator?
The calculator doesn’t restrict you ā just enter the odds. Most bookmakers allow cross-sport accumulators.
