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Strategy

Round Robin Calculator

Auto-generate every parlay combination from your legs. See total risk, ticket count, and per-outcome payout.

New to this? Start with:Parlay Calculator

Quick start

  1. Add 3 or more legs with odds
  2. Pick combination sizes (2-leg, 3-leg, etc.)
  3. Set the bet-per-ticket amount and see total risk and payouts

Try a quick round-robin example

4 legs at -110, both 2-leg and 3-leg combos, $10 per ticket → 10 tickets, $100 total risk.

Round Robin Legs

odds format selector

Need help with odds formats? Learn this step

Leg 1

Converted

Decimal
Fractional
Probability

Leg 2

Converted

Decimal
Fractional
Probability

Leg 3

Converted

Decimal
Fractional
Probability
Combination Sizes
$
Range$0 – $1,000

Add at least 2 legs, pick combination sizes, and set a bet per ticket to see results.

Copy a link that opens this calculator with your current values.

How to Use the Round Robin Calculator

Add at least 3 legs — each is a single pick at any odds format. Use Combination Sizes to choose which round-robin sizes to include: 2-leg combos, 3-leg combos, or both. Set your Bet per Ticket — each generated ticket gets this stake.

Worked example: 4 legs at -110 each, sizes [2, 3], $10 per ticket. The calculator generates C(4,2)=6 two-leg parlays + C(4,3)=4 three-leg parlays for 10 total tickets, $100 total risk. The payout schedule shows what cashes if 2, 3, or all 4 legs hit.

Use Reset to clear all legs. Use the size chips to toggle which combination sizes to include.

How it works

A round robin breaks your legs into every possible smaller parlay. Instead of needing all legs to win, partial wins still cash.

  1. Add legs — Enter odds for each pick in any format.
  2. Pick sizes — Choose which combo sizes to include — 2-leg, 3-leg, or both.
  3. Set the per-ticket bet — Each generated ticket gets the same stake.

Related tools and guides

Build the full multi-leg version with the parlay calculator, sanity-check single bets, and learn how parlay odds combine across legs.

Essentials

Parlay Calculator

Combine multiple bets into one high-payout wager

Essentials

Single Bet Calculator

Calculate payouts for a single wager

Strategy

Parlay Odds Formula

How parlay odds combine across multiple legs

Round Robin FAQs

A round robin automatically generates every smaller parlay combination from a set of legs. With 4 legs and sizes [2, 3], you get six 2-leg parlays plus four 3-leg parlays — 10 tickets sharing the same legs.

A full multi-leg parlay loses if any leg misses. A round robin lets you cash partial outcomes — hit 2 of 4 legs and at least one 2-leg ticket still pays. Trades max upside for variance smoothing.

Tickets count multiplied by bet-per-ticket. C(4,2)+C(4,3) = 10 tickets × $10 = $100 total risk.

Each ticket combines specific legs. The calculator estimates payouts using a uniform average decimal across legs — close enough for sizing decisions; actual payout depends on which specific legs hit.