Free calculator
Parlay calculator
Add each leg and your stake. You will see the combined price, the payout, and what chance those odds actually imply.
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Add at least two legs to see the payout.
Every leg has to land. The implied chance shown is what the prices themselves suggest, before any margin is stripped out.
Parlays are where the margin compounds
Each leg carries the sportsbook’s cut, and they multiply together. BetSuite works the other way: it watches for the moments two books disagree on a single market, where the edge sits with you instead.
Download Free →How a parlay is priced
A parlay multiplies. Convert each leg to decimal odds, multiply them together, and you have the price of the whole ticket. Two legs at +150 and -110 come out at 2.50 x 1.91, or 4.77, so $100 returns $477.27 if both land.
That number looks generous, and it is the reason parlays are marketed so heavily. The catch is what happens to the margin. Every leg carries the sportsbook’s cut, and multiplying the legs multiplies the cut along with the payout.
Why the house likes parlays
On a single -110 bet, the book holds roughly 4.5 percent. String four -110 legs together and the hold on the ticket climbs past 15 percent, because each leg is priced with its own margin and those margins compound. The payout grows, but your share of the true value shrinks with every leg you add.
This is worth knowing before you decide the payout is worth it. A parlay is not a shortcut to an edge. It is the same bets, priced worse, bundled together.
Where the edge actually lives
Arbitrage runs on the opposite principle. Instead of stacking margin against yourself, you look for a single market where two books disagree enough that their prices leave a gap. The arbitrage calculator works that case, and the no-vig calculator shows how much margin any price is carrying to begin with.
If you want the background, our guide to parlay betting covers when they make sense and when they do not.