What is a parlay?
The meaning of a parlay is simple: it is one bet that combines two or more individual bets, called legs, into a single wager. By definition, a parlay (also called an accumulator) only cashes if every leg wins, and in exchange the odds of all the legs multiply together, so the payout is far larger than betting each leg on its own. That is the parlay definition in one line: more risk, one ticket, a much bigger payout. "Parlay bet," "parlaying," and "accumulator" all mean the same thing: rolling several picks into one higher-paying ticket.
How the parlay calculator works
Enter your stake and each leg's American odds. The calculator instantly converts each leg to decimal odds, multiplies them together for your combined parlay odds, then multiplies your stake by those odds to show payout and profit. That part is on every parlay payout calculator. What makes this one different is the Wise Guy read: it also tells you whether the parlay is a positive expected value bet, not just what it pays.
- Enter the real odds you are getting at your book.
- The +EV check pre-fills each leg's true win % with the book's own implied odds, so a parlay reads negative by default.
- Adjust a leg's win % to your honest estimate to see if you actually have an edge.
How to calculate parlay odds
To calculate parlay odds by hand, convert every leg to decimal odds and multiply them all together. Three legs at -110 (decimal 1.91 each) work out to 1.91 x 1.91 x 1.91 = 6.96, which is about +596 in American odds, so a $10 stake returns $69.58. Each leg you add multiplies the odds, and the risk, again. The calculator above does this instantly as you type.
Parlay payout chart: 2 to 12 legs at -110
This parlay payout chart shows the combined American odds and what a $100 bet returns when every leg is the standard -110 spread price (1.9091 in decimal per leg). It answers the common cases directly: a 3 team parlay at -110 pays $695.79 total on $100 (+596), and a 10 team parlay pays $64,308.16 (+64208). The implied probability column is how often the whole ticket must win just for the bet to break even.
| Legs | American odds | Payout on $100 | Implied probability |
|---|---|---|---|
| 2 | +264 | $364.46 | 27.44% |
| 3 | +596 | $695.79 | 14.37% |
| 4 | +1,228 | $1,328.33 | 7.53% |
| 5 | +2,436 | $2,535.91 | 3.94% |
| 6 | +4,741 | $4,841.27 | 2.07% |
| 7 | +9,142 | $9,242.43 | 1.08% |
| 8 | +17,545 | $17,644.64 | 0.57% |
| 9 | +33,585 | $33,685.23 | 0.30% |
| 10 | +64,208 | $64,308.16 | 0.16% |
| 11 | +122,670 | $122,770.13 | 0.08% |
| 12 | +234,279 | $234,379.33 | 0.04% |
All legs priced -110. Payouts are total return including the $100 stake. Different leg odds change everything; enter your real prices in the calculator above.
Moneyline parlay calculator
Moneyline parlays use exactly the same math: convert each moneyline to decimal odds and multiply. A -200 favorite (1.50) parlayed with a +150 underdog (2.50) is 3.75 combined, so $100 pays $375.00 total. Heavy favorites add very little to the multiplier, which is why long all-favorite parlays pay far less than bettors expect. Enter any mix of moneylines above and the calculator prices the ticket instantly.
Same game parlay (SGP) payouts
A same game parlay combines legs from a single game, like a side plus a player prop. Because those legs are correlated, books quote SGP odds that are worse than the raw multiplication of the legs. Multiply your legs in the calculator, compare the result to the book's quoted SGP price, and the gap is the extra hold you are paying for the correlation.
NFL, NBA and MLB parlay odds
The formula never changes by sport. NFL and NBA spread and total legs are usually -110, so the chart above is the standard payout ladder for football and basketball parlays. MLB parlays are built from moneylines that range widely, so payouts vary with each matchup. Whether the ticket is built in Vegas, at an online book, or across several sports, the fair combined price is always the product of the legs' decimal odds.
Why most parlays lose money
Sportsbooks love parlays because the house edge compounds with every leg you add. A single bet at -110 carries about a 4.5% hold. String four together and the book's edge on the parlay balloons. That is why the calculator pre-fills each leg's true win % with the book's implied number: at those odds, a parlay is always negative. The only way it turns positive is if your real win rate on every single leg beats the price the book is offering.
Same game parlays and round robins
A same game parlay (SGP) combines multiple bets from one game, like a team moneyline plus a player prop. Those legs are often correlated, and books price that correlation into worse odds, so an SGP usually carries a bigger built-in hold than a standard parlay. A round robin splits your picks into several smaller parlays, so you still cash something if one leg misses, at the cost of more total stake. Both are fine in moderation. The rule does not change: only include legs where you genuinely beat the number, and keep the stake small.
The Wise Guy Team way
We are not anti-parlay. We are anti-bad-number. If you are going to play a parlay, build it from legs you have a real edge on, keep it to a fraction of a unit, and always take the best price on every leg. That is exactly what line shopping and our +EV tools are built to find.
Frequently asked questions
What is a parlay, and what does "parlay" mean?
A parlay is a single bet that combines two or more picks (legs). All legs must win, and the odds multiply for a bigger payout. "Parlay," "parlay bet," and "accumulator" mean the same thing.
How do parlays work?
You pick two or more bets, combine them into one wager, and every leg has to win. The legs' odds multiply together, so the payout is much higher than the individual bets, but the chance of winning is lower.
How do you calculate parlay odds?
Convert each leg's American odds to decimal, multiply all the decimals together, then multiply by your stake for the payout. This tool does it automatically as you type.
Are parlays a good bet?
Usually not. The sportsbook's edge multiplies with each leg, so most parlays are negative expected value. A parlay is only worth it when you have a real, measurable edge on every leg.
What is a same game parlay (SGP)?
A parlay built from multiple bets in the same game. The legs are often correlated, so books shade the odds and the built-in hold is usually higher than a standard parlay.
What is a round robin parlay?
A round robin breaks your picks into multiple smaller parlays, so you can still win something if one leg loses, at the cost of more total stake.
What is expected value (EV) on a parlay?
It is the long-run profit or loss per dollar. If the payout is higher than your market-implied chance of winning justifies, the parlay is +EV. At the book's implied odds it is always negative, which is why we let you enter your own honest win estimate per leg.
How many legs should a parlay have?
Fewer is almost always better. Every leg multiplies the book's hold. If you play one, keep the stake small and only include legs where you beat the number.
What does a 3 team parlay pay?
At -110 per leg, a 3 team parlay is about +596: a $100 bet returns $695.79 total ($595.79 profit). At other prices, multiply the three decimal odds together, then multiply by your stake.
What does a 10 team parlay pay?
At -110 per leg, a 10 team parlay is about +64208: a $100 bet returns $64,308.16 total. The implied probability is only 0.16%, which is why 10 team parlays almost never cash.
21+. For entertainment and educational purposes, not financial advice. If gambling stops being fun, take a break. 1-800-GAMBLER.