Free calculator
Parlay Calculator
How to use it
Change any input and the results update immediately. The values are also written into the address bar, so you can bookmark a calculation or paste the link to someone else and they will see exactly the same numbers.
Everything here computes with the same functions that produce the grades inside WeBall, so a number on this page will never contradict a number on a bet card.
What the term means
A single bet combining several selections, all of which must win to pay out.
Parlays multiply the odds of each leg together, which is why they pay so much and hit so rarely. Three legs at −110 pay about +596, and win roughly 12.5% of the time.
Learn the math behind it
A calculator is faster than doing this by hand, but knowing why the formula works is what lets you spot when a number is wrong. Read the full guide →