Parlay calculator
Type each leg in whatever the book shows — American (-110), decimal (1.91) or fractional (10/11) — and see the combined price, what the parlay returns and how often it has to win just to break even. New to the math? Read the step-by-step guide to calculating parlay odds.
Your legs
- 1.909 decimal · 52.4% implied
- 1.909 decimal · 52.4% implied
- 2.500 decimal · 40.0% implied
Now price the parlay against the market.
The calculator tells you what the slip pays. STRATOS helps you examine the prices behind the slip. Pro unlocks parlay and same-game analysis.
How a parlay pays
Each leg is turned into a decimal price and multiplied together. A three-leg parlay of -110, -110 and +150 pays 1.91 × 1.91 × 2.50 = 9.12, so $25 returns $228. Every leg you add multiplies the price and cuts the chance of the whole slip landing — the break-even number above is the honest test of whether the price is worth it.
If a leg pushes, most books drop it and pay the parlay at the remaining legs. Remove that leg here to see what the slip is really worth.
Stratos prices real parlays against live sportsbook markets and keeps a public, settled record of them. See today's live board or convert a single price.
Parlay payout table (all legs at -110)
Standard -110 pricing on every leg, worked out on a $100 stake. The break-even column is how often the whole slip has to land for the price to be worth taking.
| Legs | Combined odds | $100 returns | Profit | Break-even chance |
|---|---|---|---|---|
| 2 | 3.64 / +264 | $364.46 | $264.46 | 27.44% |
| 3 | 6.96 / +596 | $695.79 | $595.79 | 14.37% |
| 4 | 13.28 / +1228 | $1328.33 | $1228.33 | 7.53% |
| 5 | 25.36 / +2436 | $2535.91 | $2435.91 | 3.94% |
| 6 | 48.41 / +4741 | $4841.27 | $4741.27 | 2.07% |
| 7 | 92.42 / +9142 | $9242.43 | $9142.43 | 1.08% |
| 8 | 176.45 / +17545 | $17644.64 | $17544.64 | 0.57% |
| 10 | 643.08 / +64208 | $64308.16 | $64208.16 | 0.16% |
Worked example
Say you like three sides: Chiefs -3 at -110, Ravens moneyline at -110 and a live underdog at +150. In decimal that is 1.909, 1.909 and 2.50.
Multiply them: 1.909 × 1.909 × 2.50 = 9.11. A $25 stake returns $227.75, so the profit is $202.75. The slip only needs a positive edge if it lands more than 10.98% of the time — that is the number to argue with, not the payout.
If the Ravens leg pushes, the book usually drops it and the slip pays 1.909 × 2.50 = 4.77, returning $119.32 on the same $25.
Parlay questions people ask
- How do you calculate parlay odds?
- Convert each leg to decimal odds and multiply them together. Two -110 legs are 1.909 × 1.909 = 3.64, or about +264 in American odds. Multiply that by your stake to get the total payout.
- How is a parlay payout calculated?
- Payout = stake × the combined decimal odds. Profit is the payout minus your stake. $20 on a 3.64 parlay pays $72.80, a $52.80 profit.
- What does a 3 team parlay pay on a $100 bet?
- Three legs at -110 combine to 6.96 decimal odds, so $100 returns $695.92 and the profit is $595.92. Any leg priced differently changes that, so enter your real prices above.
- How many legs should a parlay have?
- Each added leg multiplies the price but cuts the chance of the slip landing. Three -110 legs need to win about 14.4% of the time to break even; six legs need about 2.1%. The break-even figure is the honest test, not the payout.
- Are parlays a bad bet?
- The sportsbook margin on every leg compounds, so a parlay carries more built-in margin than the same legs bet singly. That does not make it unbeatable, but the price has to be materially better than your own estimate of the chance.
- What happens if a leg pushes or is voided?
- Most books drop the leg and pay the parlay at the remaining legs' combined price. Remove it from the calculator above to see what the slip is really worth.
- What is a same game parlay?
- A same game parlay combines legs from one event, so the outcomes are correlated and the book prices them jointly instead of by simple multiplication. A plain parlay calculator will overstate what those slips pay.
- Do bigger parlays pay more than the risk deserves?
- Usually the opposite. Longer slips carry more compounded margin, which is why comparing the offered price against a modelled fair price matters more the more legs you add.
Price your parlay against real books
A calculator tells you what a slip pays. Stratos tells you whether the price is any good: every leg is compared across live sportsbook markets, and the picks we publish are graded in public afterwards.