Free betting calculator
Round robin calculator
Add 3 to 8 legs, choose parlays by 2s, 3s or more, and see how many parlays that makes, the total stake, the payout if everything wins, and what comes back if some legs lose.
Your legs
Untick a leg to see what you get back if it loses: only the parlays without that leg pay. A round robin costs the stake times the number of parlays, so check the total before betting. Calculations are hypothetical; sportsbook rules on voids and ties apply.
Calculations show hypothetical outcomes from the prices you enter. They do not predict results, and betting always involves risk.
How a round robin pays
Example: four legs at -110, +120, +150 and -130, by 2s, $10 each. That makes 6 parlays and costs $60.00. If all four legs win, every parlay pays and you profit $201.66. If the -130 leg loses, the 3 parlays without it still pay, a result of +$84.73.
The same four legs by 3s make 4 parlays for $40.00, with a bigger best case ($321.06 profit) but nothing back if two legs lose.
Tips before you bet
- Check the total stake: it is the stake per parlay times the number of parlays.
- Untick legs in the calculator to see your worst realistic case, not just the best one.
- For a single parlay of all the legs, use the parlay calculator.
Related guides
Common questions
What is a round robin bet?
A set of smaller parlays built from the same legs. A 4 leg round robin by 2s is the 6 two leg parlays you can make from those legs; by 3s it is 4 three leg parlays.
How many bets are in a round robin?
The number of combinations: 3 legs by 2s is 3 parlays, 4 by 2s is 6, 5 by 2s is 10, 5 by 3s is 10, 6 by 3s is 20. Each parlay costs your stake, so the total cost grows fast.
Do I win anything if one leg loses?
Yes, if some parlays don't include that leg. In a 4 leg round robin by 2s, one losing leg still leaves 3 of the 6 parlays alive.
Is a round robin better than a parlay?
It is less all or nothing, but it costs more and each parlay still carries the margin of every leg in it. Neither changes the odds of the individual games.
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