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Parlay calculator
Type in the odds for each leg and your bet. It works out what the parlay pays, the parlay's odds and the book's odds it hits.
American odds (−110, +150) or decimal odds (1.91, 2.50), one leg per box. Up to 10 legs.
Building a college football parlay? The parlay builder has this week's games with your sportsbook's lines filled in and the numbers behind every matchup.
How to use the parlay calculator
- Type the odds for each leg, one per box. American odds like −110 or +150 and decimal odds like 1.91 both work.
- Add a leg for each bet in the parlay, up to 10.
- Put in your bet. The payout, profit, parlay odds and the book's odds it hits update as you type.
How parlay odds are calculated
A parlay's payout is your bet times every leg's decimal odds multiplied together. That's the whole formula.
- Turn each leg into decimal odds. Plus odds: 1 + odds ÷ 100, so +120 is 2.20. Minus odds: 1 + 100 ÷ the odds, so −150 is 1.67 and −110 is 1.91.
- Multiply the legs together. −150, +120 and −110 make 1.67 × 2.20 × 1.91 = 7.00.
- Multiply by your bet. $10 × 7.00 = $70. That's the payout, your $10 included, so the profit is $60.
- Turn it back into American odds if you want them. At 2.00 or more: (decimal − 1) × 100, so 7.00 is +600. Under 2.00: −100 ÷ (decimal − 1).
Parlay payouts at −110
Spreads and totals usually price at −110. Here's what a parlay of them pays on a $10 bet, and how often it hits if every leg is a coin flip.
| Legs | Decimal odds | American odds | $10 pays | Hits if every leg is a coin flip | Book's odds it hits |
|---|---|---|---|---|---|
| 2 | 3.64 | +264 | $36.45 | 25.0% | 27.4% |
| 3 | 6.96 | +595 | $69.58 | 12.5% | 14.4% |
| 4 | 13.28 | +1,228 | $132.83 | 6.2% | 7.5% |
| 5 | 25.36 | +2,435 | $253.59 | 3.1% | 3.9% |
| 6 | 48.41 | +4,741 | $484.13 | 1.6% | 2.1% |
| 7 | 92.42 | +9,142 | $924.24 | 0.78% | 1.1% |
| 8 | 176.45 | +17,544 | $1,764 | 0.39% | 0.57% |
| 9 | 336.85 | +33,585 | $3,369 | 0.20% | 0.30% |
| 10 | 643.08 | +64,208 | $6,431 | 0.10% | 0.16% |
What happens when a leg pushes
At most sportsbooks a push drops that leg out and the parlay pays on the legs that are left. A $10 four-leg parlay at −110 pays $132.83. If one leg pushes, it becomes a three-leg parlay and pays $69.58. A two-leg parlay with a push becomes a straight bet. Some books grade pushes differently, so check your book's rules.
Why the book's edge grows with every leg
The book takes its cut on every leg, and the cuts multiply. Take coin-flip legs at −110: a 3-leg parlay gives back about 13 cents of every dollar to the book over time, and a 6-leg parlay about 24 cents. A straight bet at −110 gives back about 4.5 cents.
That's why the payouts look big. The more legs, the bigger the gap between what the parlay pays and what it would pay at fair odds.
A college football example
Three legs from a Saturday slate: a favorite at −11.5 against the spread (−110), a moneyline favorite at −250 and an over at −110. The multipliers are 1.91 × 1.40 × 1.91 = 5.10, so $10 pays $51.02, or +410. The book's odds it hits: 19.6%.
The parlay builder does this with this week's real games and lines, and the numbers behind every matchup.
Parlay calculator questions
How do you calculate a parlay payout?
Turn each leg's American odds into a decimal multiplier (+150 is 2.5, −110 is about 1.91), multiply the legs together, then multiply by your bet. Three legs at −110 multiply to about 6.96, so $10 pays $69.58.
How much does a 3-leg parlay pay?
At −110 on every leg, a 3-leg parlay pays about 6 to 1: $10 returns $69.58, which is $59.58 profit plus your $10.
How much does a 4-team parlay pay at −110?
About 12.3 to 1. A $10 four-team parlay at −110 on every leg pays $132.83.
What happens to a parlay if one leg pushes?
At most sportsbooks the pushed leg drops out and the parlay pays on the legs that are left. A $10 four-leg parlay at −110 with one push pays $69.58 instead of $132.83. Some books grade it differently, so check your book's rules.
Can you parlay spreads, moneylines and totals together?
Yes. Most sportsbooks let you mix moneylines, spreads and over/unders from different games in one parlay. Legs from the same game are a same-game parlay, which books price separately.
Are bigger parlays a better bet?
No. The book takes its cut on every leg, so the more legs you add, the more of each dollar it keeps over time. With coin-flip legs at −110, a 3-leg parlay gives back about 13% of every dollar bet to the book, and a 6-leg parlay about 24%.
What does "the book's odds it hits" mean?
It's 1 divided by the parlay's decimal odds: the chance the sportsbook's own prices give the whole parlay, with its cut built in. The real chance is a little lower than that.