Quick answer: a parlay pays out by multiplying the decimal odds of every leg, so the price grows with each pick you add, but every leg has to win. Two legs at −110 make +264: a $100 parlay returns $364 if both win. Add your legs to the parlay calculator below to see the combined odds, your payout and profit, what happens when a leg pushes, and what a round robin would cost.
Payout includes your stake. A pushed or void leg is dropped from the parlay; a losing leg loses the ticket. Same game parlays are priced by the sportsbook, usually below this figure.
How to use the parlay calculator
- Pick the odds format your sportsbook shows: American (−110), decimal (1.91) or fractional (10/11). Odds you have already typed are converted when you switch.
- Enter the odds for each leg. Use + LEG to add up to 15 legs and − LEG to remove one.
- Type your stake. The screen shows the parlay odds, the total payout (stake included), your profit and the implied chance of every leg winning.
- Settle legs as they finish. Set a leg to Push / void to drop it, or Lost to see the ticket lose.
- Try a round robin by changing Bet type to “Round robin by 2s” (or 3s, 4s and so on). The calculator shows how many parlays that creates, the total stake and what still pays if some legs lose.
What is a parlay?
A parlay is one bet that links two or more selections, called legs, and every leg must win for it to pay. If any leg loses, the whole parlay loses, however many of the others came in. In return, the odds of the legs are multiplied together, so the payout is much bigger than betting each leg on its own. In the UK and Europe the same bet is called an accumulator, or acca.
For example, a three-leg parlay could be the Chiefs to win, the over in a basketball game and an underdog in baseball. If all three win, you collect the combined price; if one loses, the ticket is lost.
How to calculate parlay odds
Convert each leg to decimal odds, multiply them, then multiply by your stake: payout = stake × odds 1 × odds 2 × odds 3 …. Take away the stake to get your profit. In decimal, −110 is 1.909 and +150 is 2.50, so a three-leg parlay at −110, −110 and +150 is 1.909 × 1.909 × 2.50 = 9.11, or +811 in American odds. A $10 bet returns $91.12. Our odds calculator converts single prices between formats if you want to check a leg.
| Legs at −110 | Parlay odds | Decimal | $10 pays |
|---|---|---|---|
| 2 | +264 | 3.64 | $36.45 |
| 3 | +596 | 6.96 | $69.58 |
| 4 | +1228 | 13.28 | $132.83 |
| 5 | +2436 | 25.36 | $253.59 |
| 6 | +4741 | 48.41 | $484.13 |
Are parlays a good bet?
Usually not, because the sportsbook’s margin is multiplied along with the odds. A −110 line on a 50/50 game carries a margin of about 4.5%; string those legs together and the edge against you grows with every leg. The table assumes each leg is a true coin flip priced at −110:
| Legs | Chance all win | Fair odds | Odds you get | Edge against you |
|---|---|---|---|---|
| 2 | 25% | +300 | +264 | 8.9% |
| 3 | 12.5% | +700 | +596 | 13.0% |
| 4 | 6.25% | +1500 | +1228 | 17.0% |
| 5 | 3.1% | +3100 | +2436 | 20.8% |
| 6 | 1.6% | +6300 | +4741 | 24.4% |
So a parlay is a small stake for a big but unlikely payout, not a way to beat the book. Keep the number of legs low, shop for the best price on each one, and only bet what you can afford to lose. Our gambling budget calculator helps you set a limit first.
What happens if a leg of a parlay pushes?
At most sportsbooks a pushed leg is removed and the parlay is paid at the odds of the remaining legs, so a three-leg parlay with a push becomes a two-leg parlay with a smaller payout. House rules differ, so check your sportsbook’s terms. In the calculator, set that leg to Push / void to see the new price.
Round robin parlays explained
A round robin splits your picks into every smaller parlay of a set size. Three picks “by 2s” make three two-leg parlays: A+B, A+C and B+C. If A and B win but C loses, the A+B ticket still pays. The catch is cost: each combination is a separate bet, so a round robin needs a bigger total stake than one parlay. Four picks by 2s is six bets, and eight picks by 4s is 70.
Same game parlays
A same game parlay (SGP) puts several bets from one match on a single ticket, such as a team to win and its quarterback to throw for 250+ yards. Those outcomes are linked, so sportsbooks adjust the price for correlation and usually pay less than multiplying the legs would suggest; some combinations are blocked altogether. Treat this calculator’s figure as the most an SGP could pay, and use the price on your bet slip.
Where to use it
Our top-rated site, 1win (9.9/10), has a full sportsbook and paid our crypto withdrawal in 15 minutes (June 2026); use promo code Ultragambler. Compare more sportsbooks in our crypto betting sites and esports betting guides. Online betting isn’t legal everywhere, so check the laws where you live first.
More free tools: the odds calculator converts odds and checks a bookmaker’s margin, the no vig calculator strips the vig out of a market to show each leg’s fair odds, and the wagering requirement calculator shows what a bonus is really worth. Unsure about a term? See our gambling terms glossary.
How we checked this
The payouts and tables on this page are our own arithmetic, and the calculator was tested against worked examples: two legs at −110 give +264, the same figure Fox Sports uses. The betting rules are checked against two independent sources:
- Every leg must win, and the odds of the legs are multiplied: Caesars Sportsbook and Fox Sports.
- Most sportsbooks remove a pushed leg and pay the reduced parlay: Caesars Sportsbook and Fox Sports.
- How round robins split picks into smaller parlays and need a bigger total stake: Caesars Sportsbook and Fox Sports.
- Same game parlays are priced for correlation, usually below the multiplied odds, and some are limited or blocked: Top End Sports and Fox Sports.
Figures last checked: 8 October 2026. Sportsbook house rules vary, so check your own sportsbook’s parlay rules and your local laws before you bet. If betting stops being fun, our responsible gambling guide lists ways to get help.
Parlay calculator FAQ
How do you calculate a parlay payout?
Convert each leg to decimal odds, multiply them together, then multiply by your stake. That gives the total payout including your stake.
How much does a 3-leg parlay pay at −110?
About +596. A $10 bet returns $69.58 and a $100 bet returns $695.79 if all three legs win.
What happens if one leg of a parlay loses?
The whole parlay loses. Only a round robin can still pay when one of your picks loses, because it is several smaller parlays.
Is a parlay the same as an accumulator?
Yes. Parlay is the American name and accumulator (acca) the British one; both combine several selections that must all win. For fractional odds, each-way accas and UK bets such as the Yankee or Lucky 15, use our accumulator calculator.
How many legs should a parlay have?
Fewer is better for your odds of winning. At −110 a leg, two legs win about 25% of the time if each is a 50/50 game, and six legs only about 1.6%.
