Parlay Calculator (Accumulator)
Combine several legs into one price, payout and profit.
| Leg | Odds | Running odds |
|---|---|---|
| Leg 1 | 1.50 | 1.50 |
| Leg 2 | 2.00 | 3.00 |
| Leg 3 | 1.80 | 5.40 |
| Legs | Combined odds | Payout | Win chance |
|---|---|---|---|
| 2 | 3.64 | 3,645 ₽ | 27.44 % |
| 3 | 6.96 | 6,958 ₽ | 14.37 % |
| 4 | 13.28 | 13,283 ₽ | 7.53 % |
| 5 | 25.36 | 25,359 ₽ | 3.94 % |
| 6 | 48.41 | 48,413 ₽ | 2.07 % |
| 7 | 92.42 | 92,424 ₽ | 1.08 % |
| 8 | 176.45 | 176,446 ₽ | 0.57 % |
| 9 | 336.85 | 336,852 ₽ | 0.30 % |
| 10 | 643.08 | 643,082 ₽ | 0.16 % |
Every leg priced at −110 (1.91), the standard spread price, on the stake you entered above.
How it works
A parlay (accumulator) rolls several selections into one bet. The combined decimal odds are simply every leg multiplied together, and the winnings of each leg ride onto the next — which is why the payout grows so fast.
That multiplication cuts both ways: the combined implied probability (1 ÷ combined odds) drops sharply with each leg, and the bookmaker margin compounds on every selection. One losing leg loses the whole bet.
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How the Parlay Calculator (Accumulator) works
A parlay (accumulator, acca or combo) combines several selections into a single bet — every leg must win for the bet to pay. This free parlay calculator multiplies the legs into one combined price and shows the total payout, profit and the real combined probability behind the big number.
How parlay odds are calculated
Combined decimal odds are simply every leg multiplied together: 1.50 × 2.00 × 1.80 = 5.40. The winnings of each leg are staked on the next, so the payout compounds — which is why a handful of short prices can turn into a large multiplier.
Multiply the combined odds by your stake for the total payout; subtract the stake for the profit. The calculator does this for any number of legs you enter.
Why parlays are harder than they look
The combined probability is 1 ÷ combined odds, and it falls fast: four 50% legs look like a 16-to-1 thrill but win only about 6% of the time. Worse, the bookmaker margin is baked into every leg and compounds with the odds, so a parlay's expected value is lower than betting each leg on its own.
Parlays sell because the potential payout is large and the stake is small. The math is honest about the trade: more legs mean a bigger headline number and a smaller chance of ever collecting it.
The parlay payout chart
Sportsbooks publish a standard chart for legs all priced at −110 (1.91 decimal), because that is what a point spread costs. Two legs pay 2.64 to 1, three pay 5.96, five pay 24.36 and ten pay 642. The calculator reproduces that chart against your own stake, so a six-teamer's payout takes no typing at all.
Read the chart next to the win-chance column and the trade becomes obvious. Ten legs at −110 pay 642 to 1, but ten genuine coin flips land once in 1 024 — the gap between those two numbers is the compounded margin, and it is entirely the bookmaker's.
Round robins and system bets
If the all-or-nothing structure is what puts you off, the round robin splits the same selections into every smaller combination, so a single loss no longer voids the ticket. It costs a multiple of the unit stake, because each combination is its own bet.
It is the same trade in a different shape: a lower ceiling for a much better chance of collecting something. Neither structure improves the underlying prices, which is why beating the closing line matters more than the shape of the slip.
FAQ
How do you calculate parlay odds?expand_more
Multiply the decimal odds of every leg together. Three legs at 1.50, 2.00 and 1.80 give 1.50 × 2.00 × 1.80 = 5.40 combined odds.
What is the payout on a parlay?expand_more
Stake × combined odds. A 10 stake on combined odds of 5.40 returns 54, for a profit of 44.
Are parlays a good bet?expand_more
They offer a big payout for a small stake, but the bookmaker margin compounds on every leg, so the expected value is worse than betting each selection separately. They are entertainment, not a long-term edge.
What happens if one leg pushes or is void?expand_more
At most books a void leg is treated as odds of 1.00 — it drops out and the parlay recalculates on the remaining legs, rather than losing the whole bet.
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