Parlay Calculator
Combine two to twelve legs and see the combined price, the return, and how likely that price says the parlay is.
Results
| Leg | Odds | Decimal odds | Implied probability |
|---|
- Stake
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- Combined decimal odds
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- Combined American odds
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- Combined implied probability
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- Profit
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- Total return
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Every leg must win. The combined implied probability is the break-even win rate the combined price implies.
These calculators are for information only. They perform arithmetic on the numbers you enter. They do not predict outcomes, recommend bets, or guarantee any result. Betting involves risk and you can lose money. Never stake more than you can afford to lose. Read our responsible betting guidance.
How a parlay payout is calculated
A parlay combines two or more bets into one. Every leg has to win for the parlay to pay, and in return the prices multiply together.
To work it out by hand, turn each leg’s odds into decimal odds, multiply them, then multiply by your stake:
- Combined decimal odds = leg 1 × leg 2 × leg 3 …
- Total return = stake × combined decimal odds
- Profit = total return − stake
Use the full decimal odds for each leg, not a rounded figure. Rounding each leg first changes the answer.
Worked example: a three-leg parlay at −110 each
A −110 price is 1.9091 in decimal odds (exactly 21 ÷ 11). The calculator shows it as 1.909.
- Combined decimal odds: 1.9091 × 1.9091 × 1.9091 = 6.958
- In American odds, that is about +596
- A $20 stake returns $139.16, which is $119.16 profit
- Combined implied probability: 14.37%
Worked example: mixed prices
Legs at +150, −120 and −110 are 2.50, 1.8333 and 1.9091 in decimal odds. Multiplied together they come to exactly 8.750, or +775, so a $20 parlay returns $175.00, which is $155.00 profit.
How the sportsbook’s margin affects a parlay
Each leg’s quoted price already includes the sportsbook’s margin, so it pays a little less than a margin-free price would. A parlay multiplies the legs’ prices together, so that reduction is applied once for every leg and compounds.
For example, if each game is an even 50/50 contest and both sides are priced −110, each side’s margin-free price would be 2.00. A two-leg parlay of those prices would pay 4.00 (+300) without the margin, and pays 3.645 (about +264) as quoted.
The combined implied probability, 1 ÷ the combined decimal odds, is the break-even win rate of the quoted parlay price.
Parlay questions
What happens if one leg pushes or is voided?
At most sportsbooks that leg is removed and the parlay is repriced on the remaining legs. Rules differ, so check your sportsbook’s house rules. This calculator assumes every leg is settled as a win.
Is a same-game parlay calculated the same way?
No, not always. Sportsbooks often price same-game parlays below the simple product of the legs, because the outcomes are related. Use the price your sportsbook quotes.
How many legs can I add?
Between 2 and 12.
Does the calculator save what I enter?
No. It runs entirely in your browser and nothing is sent or stored.