- Combined odds = leg 1 x leg 2 x ... (decimal odds)
- Payout = stake x combined odds; one losing leg loses the bet
- Hit chance as priced = 1 / combined odds
- Every leg adds margin, so long parlays cost more on average than singles
Odds grow, the chance shrinks
The table stacks legs priced at 1.91, a common price on a two-way market like a puck line or a point spread. Figures are computed; the chance is as the odds price it, margin included.
| Legs | Combined odds | C$10 returns | Chance all win |
|---|---|---|---|
| 2 | 3.65 | C$36.48 | 27.4% |
| 3 | 6.97 | C$69.68 | 14.4% |
| 4 | 13.31 | C$133.09 | 7.5% |
| 5 | 25.42 | C$254.19 | 3.93% |
| 6 | 48.55 | C$485.51 | 2.06% |
| 8 | 177.12 | C$1771.20 | 0.56% |
| 10 | 646.15 | C$6461.50 | 0.15% |
Ten legs at 1.91 pay more than 640 times the stake, and land well under once in 600 tries even before the margin is counted. That's why parlays are popular in sportsbook promotions: the headline payout is big and the hit rate is small. Our parlay betting guide explains the maths and the variants, and bookmaker margin explained shows why every extra leg costs you more on average.
Need to switch formats first? Use the odds converter. Parlay boosts and other sports offers are on our sportsbook bonuses page. Betting is for adults only (19 or over in Canada, 18 or over elsewhere); parlays are easy to chase, so set a limit before you start and see our responsible gambling page for help.
FAQ
How is a parlay payout calculated?
Multiply the decimal odds of every leg, then multiply by your stake. Three legs at 1.91 give combined odds of about 6.97, so a C$10 parlay returns about C$69.68 in total if every leg wins. One losing leg loses the whole bet.
What does the hit chance mean?
It is the chance of every leg winning as the odds price it: 1 divided by the combined odds. Because each leg carries the sportsbook margin, the real chance is a little lower than the figure shown, and the gap grows with every leg you add.
What happens if a leg is void or pushes?
At most sportsbooks a void or pushed leg is removed and the parlay is settled on the remaining legs at their combined odds. Rules differ between sportsbooks and sports, so check the house rules before you bet.
Do parlays count toward a sports bonus rollover?
Often yes, and some offers require parlays with a minimum number of legs and minimum odds per leg or in total. The card for each offer on our sportsbook bonus pages shows the minimum odds and legs where the terms set them.
Are same-game parlays calculated the same way?
No. Legs from the same game are related, so sportsbooks price same-game parlays with their own model rather than multiplying the odds. Use the price the sportsbook quotes for those.