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Parlay calculator
Add the odds for each leg to see the combined price, the payout if every leg wins, and the chance all legs hit according to the posted odds.
How it works
A parlay combines several legs into one wager, and every counted leg must win for it to pay. Combined decimal odds are the legs' decimal odds multiplied together. If a leg is a push or is voided, house rules commonly remove that leg and recalculate the odds on the remaining legs; for example, one operator's published house rules say the parlay "will stand on all remaining selections and the odds of the wager are recalculated" (see source below). Rules differ by operator and state, so check the terms for your wager.
The math
- Combined decimal odds = leg 1 x leg 2 x ... x leg n (a removed leg counts as 1.00).
- Chance all legs win, per the posted odds = the product of each leg's implied probability (1 / decimal). Because each price includes the sportsbook margin, this is not a forecast of the real chance.
Worked examples
- Three legs at -110: combined decimal 6.9579 (+596). Each leg implies 52.38%, so all three imply 14.37%. A $10 wager would return $69.58 if all three win.
- Two legs, -110 and +150: combined decimal 4.7727 (+377).
What this calculator does not do: it does not tell you what to bet, whether a bet is good value, or how likely any real game outcome is. It only does arithmetic on the numbers you enter, in your browser; nothing you type is sent or saved.