Parlay Calculator
Calculate Parlay Odds, Payout and Profit
Enter two or more selections to calculate combined parlay odds, price-derived break-even probability, total return and potential profit. Each leg can use decimal, fractional or American odds.
Results update automatically when all active inputs are valid. Total return includes the original stake. The calculator does not recreate a sportsbook's same-game parlay pricing or settlement adjustments.
Parlay formula
Every valid price is converted to decimal odds first. The calculator then multiplies the decimal price of each leg.
Worked parlay example
Assume a 3-leg parlay with decimal odds of 1.80, 2.10 and 1.65, using a 20-unit stake.
Method limits
- Same-game and correlated legs: simple multiplication may not match the sportsbook's offered price because related selections can be repriced, restricted or rejected.
- Voids and pushes: settlement can change the number of active legs or the final price. This calculator does not apply a sportsbook's house rules automatically.
- Price changes and promotions: the calculation uses only the odds entered. An odds boost is reflected only when the boosted price is entered. Maximum-payout limits, stake limits, cash-out terms and sportsbook-specific settlement or rounding rules are not modelled.
- Probability: the displayed percentage is a price-derived break-even reference. It is not an independent estimate of the parlay's true chance of winning.
- All-leg requirement: the basic calculation assumes every active leg must win for the full quoted parlay return, subject to the sportsbook's settlement rules.
Parlay calculator FAQ
Does the order of the parlay legs change the result?
No. Multiplication gives the same combined decimal odds regardless of leg order, provided the same prices are used.
Can I use dollars, pounds or euros instead of units?
Yes. The arithmetic is currency-neutral. If the entered stake is 20 dollars, pounds or euros, the calculated return and profit use that same currency.
Why can two three-leg parlays have very different payouts?
The number of legs alone does not determine the payout. The combined price depends on the individual odds of those legs, so three short-priced selections can produce a much smaller return than three longer-priced selections.
Can I work backwards from a target return?
Yes, once the combined decimal odds are known. Divide the target total return by the combined odds to find the required stake. For example, a target return of 100 units at combined odds of 5.00 requires a 20-unit stake.
Is a parlay the same as placing each selection as a separate bet?
No. Separate bets settle independently. In a standard parlay, the selections are combined into one bet and the full return normally depends on all active legs winning, subject to the sportsbook's settlement rules.