Plan a combination / Free calculator
Round Robin Calculator
A round robin places several smaller parlays from a larger set of selections. Calculate the number of bets and total cost, then mark winning selections to model the combined return.
Your inputs
Instant calculationMark winners to model a settled result. Unchecked legs count as losses.
Changing formats resets odds to even money.
Your results
Based on your inputs. Before fees, rounding, and venue-specific settlement rules.
How to use the round robin calculator
Add your selections, choose how many legs go into each parlay, and enter a stake per combination. Every combination of that size is a separate bet. Only combinations made entirely of selections marked as winners return a payout.
Number of bets = n! / [k! × (n − k)!]; total stake = number of bets × stake per betA worked example
Three +100 selections played as two-leg parlays produce three bets. At $10 per bet the total stake is $30. If exactly two selections win, one parlay returns $40 and the other two lose, for a $10 net profit.
What the numbers can tell you
The stake is per combination, not a total budget. This models standard independent-price parlays without pushes, voids, or same-game restrictions. Adding selections can increase the total cost rapidly; inputs are capped at 12 selections.
Frequently asked questions
Can a round robin lose money when some bets win?
Yes. Winning combinations must return enough to cover all the losing combinations as well as their own stake. The result depends on the prices and which selections win.
What does the winner checkbox mean?
It is a hypothetical settlement input. Unchecked selections are modeled as losses. It is not a prediction, live score, or recommended pick.