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Round Robin Bet Calculator
Enter your picks and the round robin size to see every parlay it creates, what it costs, and what you win at each number of winners.
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| Picks that win | Parlays that cash | Net result (range) |
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The range is the worst and best case for that many winners, because which picks win changes the payout when the odds differ. Assumes no pushes or voids (books usually drop a pushed leg and pay the shorter parlay).
How to use this calculator
Enter the American odds for each pick (up to 8), choose the round robin size and the stake per parlay. The green line shows how many parlays you are buying, the total risk, the profit if every pick wins, and how many winners you need to profit. The table gives the worst and best net result for each number of winners. After the games, tick the picks that won to grade your ticket. Copy the result or save it as an image to share.
How a round robin works
A round robin turns one list of picks into several smaller parlays. "By 2's" on 4 picks makes every possible 2-team parlay: 6 tickets. "By 3's" makes 4 three-team parlays. You pay the stake on every ticket, so the total risk climbs fast, but one losing pick no longer kills the whole bet the way it does in a single parlay. The trade-off is that each ticket still carries the book's vig, and a round robin is just many parlays at once. It changes how your results swing, not your expected value per dollar.
Use the table to see how many winners you need before the ticket turns a profit, and compare it with putting the same money on one big parlay. Price any single combination in the parlay calculator, check the vig in each price with the odds converter, and size the whole ticket against your bankroll with the Kelly calculator.
FAQ
How many bets are in a round robin?
A round robin by k's on n picks has C(n, k) parlays, the number of ways to choose k picks from n. 4 picks by 2's = 6 parlays, 5 by 2's = 10, 5 by 3's = 10, 6 by 3's = 20. Your total stake is that count times the stake per parlay.
How is a round robin paid?
Each parlay inside the round robin is graded on its own. A parlay pays stake × the product of its legs' decimal odds when all of its legs win, and loses the stake otherwise. Your result is the sum of every cashed parlay minus your total stake.
Is a round robin better than a parlay?
Not in expected value: it is several parlays, and each one carries the vig. A round robin lowers your risk of losing everything on one bad leg, but the most it can pay is smaller than one big parlay with the same total stake. Use it when you want a smoother result, not a bigger edge.