Round robin
Round Robin Calculator
A round robin splits your picks into several smaller parlays. The calculator prices every parlay with its own odds and shows the total cost and what you get back – even when some picks lose.
Calculate your round robin
Add 3–10 picks, choose the parlay size and your stake per parlay. Every parlay is priced with its own odds.
If every pick wins
$120.00
Net +$90.00
- Number of parlays
- 3
- Total stake
- $30.00
- Winning parlays
- 3 of 3
Inputs changed. Press Calculate to update the result.
Stake per parlay
Your total cost is the number of parlays times the stake per parlay. Three picks by 2s is three separate bets.
Every combination
3 parlays · total stake $30.00 · total payout $120.00
| Parlay | Odds | Payout |
|---|---|---|
| A + B | +300 (4.00) | $40.00 |
| A + C | +300 (4.00) | $40.00 |
| B + C | +300 (4.00) | $40.00 |
Showing 1–3 of 3
How a round robin bet works
Instead of one big parlay, you bet every smaller parlay of a chosen size. With three picks (A, B and C) by 2s, that is three bets: A + B, A + C and B + C. Each parlay has its own stake and pays on its own.
| Parlay | Odds | Payout |
|---|---|---|
| A + B | +300 (4.00) | $40.00 |
| A + C | +300 (4.00) | $40.00 |
| B + C | +300 (4.00) | $40.00 |
If all three picks win, all three parlays pay: $120.00 for a $30.00 total stake. If only A and B win, only A + B pays $40.00, a +$10.00 net result. With fewer than two winners the payout is $0.
How many bets is a round robin?
The number of parlays is the binomial coefficient C(n, k): from n picks you can build that many different parlays of k legs. Your total stake is the number of parlays times the stake per parlay.
| Picks | By 2s | By 3s |
|---|---|---|
| 3 picks | 3 | – |
| 4 picks | 6 | 4 |
| 5 picks | 10 | 10 |
| 6 picks | 15 | 20 |
| 8 picks | 28 | 56 |
| 10 picks | 45 | 120 |
Check which round robin your ticket uses
This calculator uses the US convention: every k-leg parlay from n selections, each with the same stake. Some UK bet menus use ‘Round Robin’ for a named three-selection combination that also contains conditional up-and-down bets. That is a different ticket, with different cost and settlement rules; do not compare the totals as if the names guaranteed the same structure.
When your picks have different odds
Every parlay is priced with its own odds. With decimal odds of 1.50, 2.00 and 3.00 (−200, +100, +200) and $10 by 2s, the parlays pay $30.00, $45.00 and $60.00 – $135.00 in total if everything wins. That is why you cannot multiply the number of winning parlays by one price. If only A and C win, only A + C pays: $45.00.
Compared with a single parlay, a round robin costs more because it is several bets, but one losing pick does not lose everything.