Calculate parlay from your inputs, with a result breakdown and worked steps.
Parlay Formula and Method
Combined odds = 1.8 × 2 × 1.5
Enter one decimal price for each leg and the cash stake for the entire ticket. Product-priced parlays multiply leg prices, then multiply that combined price by the stake for the all-win return. Subtract the original stake once to find net profit on the complete ticket.
How to Use This Calculator
Select the result and any applicable method before entering the visible values. Check the selected record, unit and scoring conventions before calculating. Review the primary result and its breakdown, then open the calculation steps to see how the inputs were used.
Worked Example
With the example inputs in the table, the result is 540 USD. The return includes the original cash stake.
Return = stake × combined odds
Input and Example Guide
| Input or category | Example or weight | Entry guidance |
|---|---|---|
| Money unit | U.S. dollars (USD) | Choose the convention that applies to your record. |
| Cash stake (selected currency) | 100 | Use the stated unit; retain available precision. |
| Decimal odds, one per leg (decimal prices) | 1.8, 2, 1.5 | Use matching entries separated by commas or spaces. |
Interpreting the Result
The quoted payout rule matters. Correlated selections, same-game products, boosts and special settlement can use a price different from a simple product. The reciprocal of the combined price is a break-even joint probability; it is not evidence that the component outcomes are independent or likely to win.
Use the sportsbook’s final quoted price for correlated same-game combinations. Multiplying separate leg prices is valid only when that payout rule applies; it does not establish independent win probabilities.
Assumptions and Common Input Errors
The return includes the original cash stake. Keep the same currency and settlement conditions throughout a scenario. Displayed currency amounts are rounded to two decimals; calculations retain precision unless cent allocation is explicitly described.
Saving and Revising a Scenario
A successful calculation is saved in this browser and can be restored on the next visit. Editing an input clears the old result so it is not mistaken for an updated calculation. Reset returns the example inputs and clears the saved result.
Sources
Betfair Help, Decimal Odds and Stake-Inclusive Returns, reviewed 2026. Arithmetic and scenario assumptions are specified above.