Subtract your original stake to get the parlay odds.Multiply the multiplier by your bet amount.Multiply the decimal odds together to get your multiplier.Convert the American odds to decimal odds using our odds converter.Sportsbooks automatically calculate parlay payouts for you, or you can use our parlay calculator above. It's more difficult to be right 5 times than 1. Sportsbooks give you bigger and bigger payouts for adding more games to a parlay, but the probability of losing increases as well. If even one game loses, the parlay loses. A parlay is treated as one big bet, and every bet or selection within a parlay must-win for the parlay bet to payout. Parlay Calculator, Parlay Betting Odds FAQ & Examples What is a parlay bet?Ī parlay is a wager type in which multiple bets are linked together as one.