Enter two or more legs to calculate combined decimal odds, estimated hit probability, potential payout, and potential profit.
Method
A parlay combines multiple selections into one calculation. Decimal odds are multiplied to estimate the combined price, while the stake is multiplied by that price to estimate payout. The probability field is separate: it reflects your assumptions and is multiplied across legs only as a simple independence estimate.
Educational example
For a $25 educational example with decimal odds of 1.80 and 2.10, the combined odds are 3.78.
Potential payout: $94.50. Potential profit: $69.50. This does not account for void rules, limits, taxes, or correlated outcomes.
Recalculate a multi-leg price before relying on a displayed return.
Remove one leg to see how much probability and payout change.
Use transparent inputs to explain why payout rises as hit probability usually falls.
The basic calculation assumes each leg settles independently. Same-game selections, related markets, pushes, dead heats, boosts, and operator-specific settlement rules can make the displayed estimate inaccurate.
Multiply the decimal odds for every included leg.
No. Payout alone does not show whether your probability estimate is accurate or whether the price has positive expected value.
Direct multiplication can overstate the true hit probability when outcomes are related.