Round robin calculator
How many parlays a round robin makes, what it costs, and what you finish with for each number of winning legs.
Result
- Parlays
- 6
- Total stake
- $60.00
- All 4 legs win
- $158.68
- 3 of 4 legs win
- $49.34
- 2 of 4 legs win
- -$23.55
- Fewer than 2 legs win
- -$60.00
Each line is what you finish with after the total stake. A range means it depends on which legs win.
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How it works
A round robin takes a list of legs and bets every smaller parlay you can make from them. Four legs "by 2s" is six two-leg parlays; "by 3s" is four three-leg parlays.
Each parlay is its own bet with its own stake, so the cost is the stake times the number of parlays. Unlike one big parlay, a round robin still pays something when a leg loses, because the parlays without that leg can still win.
Enter each leg's odds, pick the parlay size, and set the stake per parlay. The result shows what you finish with, after the total stake, for each number of legs that win.
How many bets is a round robin?
It's the number of ways to choose the parlay size from your legs. Four legs by 2s makes 6 parlays, five legs by 2s makes 10, and five legs by 3s also makes 10. At $10 a parlay, four legs by 2s costs $60.00.
What does a round robin pay?
Take four legs at -110, by 2s, at $10 a parlay. Each two-leg parlay pays $36.45 when both of its legs win. If all four legs win, all six parlays cash and you finish $158.68 ahead. If three win, three parlays cash and you finish $49.34 ahead. If only two win, one parlay cashes and you're down $23.55. With one winner or none, you lose the whole $60.
The same $60 on one four-leg parlay would finish $737.00 ahead, but only when all four legs win. A round robin trades most of that top payout for a result when a leg misses. Every parlay in it still carries the book's margin on each leg, and the parlay calculator shows how that margin compounds.