Round robin calculator
Give it your legs, their prices, the size of the parlays and the stake on each one. It writes every parlay the book would write, then tells you the total you are betting and what comes back if they all win.
- Payout if every leg wins
- $110.48
- Number of parlays
- 3
- Total amount bet
- $30.00
- Profit if every leg wins
- $80.48
What it shows
Three legs at -110, +120 and -150, by twos at $10 a parlay, make three parlays. That's a $30 bet. If all three legs win, the three parlays pay $110.48 between them, a profit of $80.48.
The more useful sum is what happens when one leg loses. If each leg is a coin flip, that's three times likelier than all three winning. Lose the +120 leg and only the -110 and -150 parlay pays: $31.82 back on $30, a profit of $1.82. Lose the -150 leg instead and you clear $12.00. Lose two and you lose. So that's what a round robin buys you, as I see it: a ticket that survives one loser, paid for by risking three times the stake.
The mistake people make
Reading the stake as the bet. I understand why: the slip puts the small number in the box. The figure you type into the slip is per parlay, and the calculator's total is the number that leaves your account. I'd check it every time, because the count climbs faster than people expect: five legs by twos at $10 is ten parlays and a $100 bet, six legs by threes is twenty parlays, and if the book lets you tick two sizes at once you're paying for both columns. The round robins guide has the counts and explains when the spread of bets is worth what it costs.