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.
Done with the math? Bet a real market.
These numbers are live on the BettorEdge marketplace right now, at prices set by bettors, not the house.
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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.
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.
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 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?+
Convert each leg to decimal odds, multiply them all together, then multiply by your stake. The result is your total payout, and the payout minus your stake is your profit.
What are the odds of winning a 4-leg parlay?+
Multiply each leg's win probability. Four -110 legs (about 52.4% each) give roughly a 7.5% chance of all four hitting.
Do more legs mean a better bet?+
More legs mean a bigger payout but a much lower chance of winning, and more compounded vig at a sportsbook. Most sharp bettors keep parlays short.
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.