Betting Calculators
Round Robin Calculator
Creates all possible parlays from your selections. Choose 3-8 picks and see every 2-way and 3-way combination. Great for spreading risk across multiple smaller parlays.
How to Use This Calculator
- Select your odds format (Decimal, Fractional, or American)
- Enter the unit stake (amount per individual bet)
- Add your selections (3 to 8) with their odds
- Set the outcome for each selection (Won, Lost, or Void)
- Choose the minimum and maximum parlay sizes (e.g., 2-way to 3-way)
- View the total return, profit, and breakdown by bet type
Formula
Round robin bets are calculated by generating all possible combinations of your selections at each fold size.
Number of combinations = C(n, k) where n = number of selections, k = fold size
For example, 4 selections with 2-way and 3-way parlays:
- C(4,2) = 6 doubles
- C(4,3) = 4 trebles
- Total: 10 bets
Frequently Asked Questions
What is a round robin bet?
A round robin creates all possible parlay combinations from your selections at chosen fold sizes. For example, from 4 picks you can create all 6 possible 2-way parlays and all 4 possible 3-way parlays.
How is a round robin different from a regular parlay?
A regular parlay is one bet combining all selections. A round robin splits your selections into multiple smaller parlays, so some can win even if others lose.
What fold sizes should I choose?
2-way parlays give the most chances of winning but lower payouts. 3-way parlays offer a balance. Higher fold sizes mean fewer, riskier bets with bigger potential payouts.