Parlay Calculator
Add each leg's odds and your stake. The calculator shows the parlay's combined odds, what it pays, and how likely it is that every leg hits.
How parlay odds are calculated
Turn each leg's American odds into decimal odds, multiply them together, and multiply by your stake. That is what the parlay returns, stake included.
Payout = stake × d₁ × d₂ × … × dₙ
- Minus odds: decimal = 1 + 100 ÷ odds. At -110 that is 1.909.
- Plus odds: decimal = 1 + odds ÷ 100. At +150 that is 2.5.
Example: three legs at -110, +150 and -2001.909 × 2.5 × 1.5 = 7.159, about +616.
A $10 parlay returns $71.59.
What a parlay of -110 legs pays
| Legs | Parlay odds | $10 returns | Implied chance all hit |
|---|---|---|---|
| 2 | +264 | $36.45 | 27.4% |
| 3 | +596 | $69.58 | 14.4% |
| 4 | +1228 | $132.83 | 7.5% |
| 5 | +2436 | $253.59 | 3.9% |
| 6 | +4741 | $484.13 | 2.1% |
The "implied chance" is the chance the prices themselves imply, with the book's margin still in them, so the true chance is a little lower. Every leg you add multiplies the payout and divides the chance.
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