Betting calculator

Round Robin Parlay Payout Calculator

Choose your legs, enter each American price and mark every result as a win or loss. The calculator settles every smaller parlay in the round robin.

Your total stake is this amount multiplied by the number of combinations.

Formula

Combinations = C(n, r). Each winning combination pays stake × the product of its decimal odds. Net profit = total payout − total stake.

Worked examples

4 legs, by 2s. C(4,2) = 6 parlays. Three winning legs and one losing leg produce 3 winning combinations.

FAQ

What does stake per combination mean?

A $10 stake across six combinations risks $60 total. It is not a $10 total round-robin stake.

What happens when one leg loses?

Only combinations containing that losing leg lose. Combinations made entirely from winning legs still pay.

Research tool only. Never risk money you cannot afford to lose. Help: ncpgambling.org.