PARLAY CALCULATOR
Free · no signup · runs entirely in your browser
Enter the odds for each leg (American like -110 or +150, or decimal like 1.91) and your stake. The calculator multiplies the decimal odds together, which is what a sportsbook does, and shows what the parlay actually pays.
The maths: Combined decimal odds = d₁ x d₂ x ... x dₙ. Payout = stake x combined odds. Profit = payout - stake. Implied probability = 1 / combined odds.
FAQ
How is a parlay payout calculated?
Convert every leg to decimal odds, multiply them together, then multiply by your stake. That product is the total return; subtract the stake for profit.
Do parlays have worse odds than single bets?
The book's margin compounds with each leg. A single -110 bet carries roughly 4.5% hold; a four-leg parlay of -110 legs carries far more, because the margin is applied to every leg and then multiplied.
What is the true probability my parlay hits?
One divided by the combined decimal odds gives the book-implied probability. Your real probability is lower than the payout suggests, which is the whole business model.
Built by CAPTRACKER, which tracks public handicappers and settles every pick automatically against the final score. If you are about to follow someone's picks, look up their record first.