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Parlay / Accumulator Calculator

Add your legs in any format and instantly see the combined odds and total payout. The fastest parlay maths on the web.

Combined decimal
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Combined American
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Total payout
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Profit
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Combined odds = the product of every leg's decimal odds. Implied probability of the parlay: —. Want legs that actually hit together? Our model flags correlation. See today's best bets →

Build smarter parlays

Most parlays lose because the legs are correlated or each one is −EV. Our model rates every leg and surfaces the +EV ones. Free.

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Parlays — quick answers

How is a parlay payout calculated?

Multiply every leg's decimal odds, then multiply by your stake. 1.91 × 2.50 × 1.80 = 8.60, so $10 returns $85.95.

Why do parlays usually lose?

Every leg must win and the book's margin compounds across legs. A small edge per leg can still be a big −EV parlay.