Combine multiple betting selections to calculate your total odds, potential return, profit and implied probability.
Every selection must win for a standard parlay or accumulator bet to return the full calculated payout.
A parlay calculator combines the odds from multiple betting selections into one overall price.
In the UK and many other markets, the same type of bet is commonly called an accumulator or acca.
Instead of each selection being settled as a separate bet, all selections are combined. For a standard parlay to win, every selection normally needs to be successful.
With decimal odds, the prices of all selections are multiplied together.
Imagine you combine three selections with decimal odds of 1.80, 2.00 and 1.50.
If you stake €20 at combined odds of 5.40:
Every new selection multiplies the overall price. That is why a parlay can move from relatively low individual odds to a much larger combined payout very quickly.
But the same principle works in the opposite direction when it comes to the probability of winning the entire bet. Adding more selections means there are more individual outcomes that all need to be correct.
Adding more selections increases the potential payout, but it also creates more ways for the entire bet to lose. One losing selection normally causes a standard parlay to lose.
Seeing a large potential return can make the final payout more noticeable than the probability required to reach it. Both sides of the calculation matter.
The calculator converts the combined decimal odds into an implied probability.
For combined odds of 5.40, the implied probability is approximately 18.52%.
This is the probability represented by the combined betting price. It should not be treated as a guaranteed or exact prediction of the true chance of the parlay winning.
No. Decimal, American and fractional odds are simply different ways of displaying a betting price.
This calculator accepts all three formats and converts each selection internally before calculating the combined parlay odds and payout.
Some selections are related to each other. Sportsbooks may adjust, restrict or reject correlated combinations, particularly in same-game parlays. The calculator uses the odds you enter and does not attempt to model those relationships.
A parlay calculator lets you see exactly what happens when several betting prices are combined.
Instead of multiplying every selection manually, you can immediately see the combined odds, potential payout, profit and implied probability.
It also makes it easier to see how dramatically adding another selection can change both the potential payout and the price represented by the entire bet.