Parlay Calculator
Build your parlay, see the true odds, payout, and the chance it actually hits.
All 3 legs have to hit. This is the bet the house is counting on.
Enter your stake and the odds for each leg. The calculator multiplies the legs to give your combined parlay odds, total payout, profit, and the true probability that every leg hits.
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How the Parlay Calculator works
What is a parlay?
A parlay is a single bet that combines two or more legs. Every leg has to win for the parlay to pay. The payout compounds, so the more legs you add the bigger the potential return, and the lower your real chance of winning.
How parlay odds are calculated
Convert each leg to decimal odds, multiply them together, and that product is your parlay's decimal odds. Multiply by your stake to get the total payout. For example, three legs at 1.91 each give 1.91 x 1.91 x 1.91 = 6.97 decimal odds.
Moneyline parlay calculator
A moneyline parlay strings together straight-up winners, and this calculator handles it directly: enter each moneyline in American odds, like -150 or +130, and it converts every leg to decimal and multiplies them. A -150 and +130 two-leg moneyline parlay is 1.67 x 2.30 = 3.83 decimal, so a $100 bet returns about $383. Baseball parlays work the same way, since most MLB legs are moneylines or the 1.5-run line.
The true odds of winning a parlay
Multiply the implied probability of each leg. Three coin-flip legs at 50% give 0.5 x 0.5 x 0.5 = 12.5%. This is why long parlays rarely hit: a 6-leg parlay of -110 favorites has only about a 2% chance, even though it feels close.
What happens if a parlay leg pushes or is voided
At most books a pushed or voided leg drops out and the parlay is repriced on the legs that are left. A 4-leg parlay at -110 that has one push becomes a 3-leg parlay: a $10 bet pays $69.58 instead of $132.83. To check a parlay with a push, remove that leg in the calculator and read the new payout. A few books grade a push differently on 2-leg parlays, so check the house rules on your ticket.
Why sportsbooks love parlays
Books hold far more on parlays than on single bets because the vig compounds with every leg. That is exactly why a marketplace matters: on BettorEdge you can build or take parlays at market-fair prices instead of paying a stacked margin.
Parlay Calculator examples
NFL: a 3-leg spread parlay at -110
Three point spreads, each at -110, with a $20 stake. Each leg is 1.909 in decimal, and 1.909 x 1.909 x 1.909 = 6.958. The parlay pays $139.16 back on $20, which is $119.16 in profit, or about +596 in American odds. The prices imply a 14.4% chance that all three cover. If each spread is really a coin flip, the fair chance is 12.5%.
NBA: a 2-leg moneyline parlay with a favorite and an underdog
A -200 favorite and a +150 underdog with a $50 stake. The favorite is 1.50 in decimal and the underdog is 2.50, so the parlay is 1.50 x 2.50 = 3.75, or +275. A $50 bet returns $187.50 ($137.50 profit). The implied chance both win is 66.7% x 40% = 26.7%.
MLB: a 3-leg moneyline parlay
Moneylines of -140, +110 and -125 with $25 on the ticket. In decimal that is 1.714 x 2.10 x 1.80 = 6.48, or +548. The parlay pays $162.00 back ($137.00 profit). The implied chance all three win is 58.3% x 47.6% x 55.6% = 15.4%.
Parlay odds by number of legs
Every leg priced at -110 (a standard coin-flip line). Watch the payout climb while the true chance of hitting collapses. That gap is the whole game.
| Legs | Decimal | American | $100 pays | True chance |
|---|---|---|---|---|
| 2 | 3.64 | +264 | $364 | 27% |
| 3 | 6.96 | +596 | $696 | 14% |
| 4 | 13.28 | +1228 | $1,328 | 8% |
| 5 | 25.36 | +2436 | $2,536 | 4% |
| 6 | 48.41 | +4741 | $4,841 | 2% |
| 7 | 92.42 | +9142 | $9,242 | 1% |
| 8 | 176.45 | +17545 | $17,645 | 0.6% |
| 9 | 336.85 | +33585 | $33,685 | 0.3% |
| 10 | 643.08 | +64208 | $64,308 | 0.2% |
A 6-leg parlay of -110 favorites pays like a longshot but hits only about 2% of the time. Shorter parlays at market-fair prices keep more of the math on your side.
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Frequently asked questions
How is a parlay payout calculated?+
A parlay payout is your stake times the product of every leg's decimal odds. Convert each leg to decimal, multiply them together, then multiply by your stake. The payout minus your stake is your profit.
How much does a 3-leg parlay pay?+
A 3-leg parlay with every leg at -110 pays about +596, so a $100 bet returns about $696 ($596 profit). The chance all three -110 legs hit is about 14%, based on each leg's implied probability. Enter your own three prices above to see the exact payout.
What are the odds of winning a 4-leg parlay?+
Four -110 legs have about a 7.5% chance of all hitting, based on each leg's 52.4% implied probability. To get the chance for any parlay, multiply each leg's win probability together.
What happens to my parlay if one game pushes?+
At most sportsbooks a pushed leg is removed and the parlay pays at the odds of the remaining legs. A 4-leg -110 parlay with one push pays like a 3-leg parlay, $69.58 on $10 instead of $132.83.
Can I mix moneylines, spreads and totals in one parlay?+
Yes, a parlay can mix any bet types from different games, and the math is the same. Enter each leg's price in American, decimal or fractional odds and the calculator multiplies them. Same-game parlays are priced differently because the legs are correlated, so a book's same-game price will not match this calculation.
Do more legs mean a better bet?+
No. More legs raise the payout but cut your chance of winning faster, and the vig compounds with every leg. Most sharp bettors keep parlays short.
Is this parlay calculator free?+
Yes. It is free, needs no signup, and handles 2 to 12 legs in American, decimal or fractional odds.
Can I bet parlays on BettorEdge?+
Yes. BettorEdge offers community parlays at market-fair prices, so you keep more of the upside instead of paying the book's parlay hold.