Free calculators / Parlay
Parlay calculator
Combine two or more legs into a single parlay price. This assumes independent legs — read the honest note below before you use it on a same-game parlay.
Combined parlay price
3.645
+264
27.44%
The math
combined = odds₁ × odds₂ × ... × oddsₙ implied probability = 1 / combined
Honest note: This assumes every leg is independent. Same-game parlays and other correlated legs (e.g. a team's spread and their own player's prop) do not multiply cleanly — the real combined probability can be meaningfully higher or lower than this math shows. Correlation is not modeled here.
How it's computed
Under an independence assumption, a parlay's combined decimal price is simply the product of each leg's own decimal price:
Combined price
combined = odds₁ × odds₂ × ... × oddsₙ implied probability = 1 / combined
Honest note: This assumes every leg is independent. Same-game parlays and other correlated legs (e.g. a team's spread and their own player's prop) do not multiply cleanly — the real combined probability can be meaningfully higher or lower than this math shows. Correlation is not modeled here.
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