Stack any legs and see the true combined odds and payout. American or decimal — no signup.
A parlay multiplies the payouts of every leg together. The easiest way to do it by hand is to convert each leg to decimal odds, multiply them, then convert back.
Every leg carries the book's margin, and a parlay multiplies it. A true coin-flip two-teamer should pay +300 (4.00 decimal), but at −110 a leg it pays about +264. The more legs you add, the bigger that gap gets — which is why sportsbooks promote parlays so heavily.
Parlays make the most sense when each leg has its own edge, and when you've shopped for the best price on every leg. A few cents on each leg compounds in your favor the same way the vig compounds against you. Our Live Odds page shows the best available price across books.
Legs are correlated when one result makes another more likely — for example, a favorite's moneyline and the same game's over. Sportsbooks price same-game parlays with their own correlation adjustment, so the payout is usually lower than simply multiplying the legs. This calculator assumes independent legs, which is right for legs from different games.
Convert each leg to decimal odds, multiply them together, and multiply by your stake to get the total payout. For example, two −110 legs are 1.909 × 1.909 = 3.645, or about +264.
About +596. Each −110 leg is 1.909 in decimal odds, and 1.909 × 1.909 × 1.909 ≈ 6.96, so a $10 bet returns about $69.60.
At most sportsbooks a pushed leg is removed and the parlay pays at the odds of the remaining legs — a three-team parlay becomes a two-team parlay. House rules vary, so check your book.
The sportsbook's margin compounds with every leg, so long parlays usually carry a higher house edge than straight bets. They're most defensible when each leg has an edge on its own and you've taken the best available price.