How to find the real odds of a parlay (and which sportsbook pays the most)
A parlay's real odds are every leg's real chance multiplied together, once the sportsbook's cut is taken out. The payout the app shows you is almost always smaller than those odds deserve, and the same legs can pay thousands of dollars more at one book than another.
Price a parlay in 3 seconds →What the payout hides
A standard bet at -110 on both sides implies a 52.4% chance for each side. Both sides can't be 52.4%: together they add to 104.8%. The extra 4.8% is the book's cut (the hold, or vig). Take it out and each side is really about 50%.
A parlay multiplies that cut. Three legs at -110 pay +596. If each leg is truly a coin flip, the fair payout for three is +700 (1 in 8). The book keeps about 13% of what the ticket should pay. Ten legs, and the gap gets much wider.
How to work out the real odds
- Convert each leg's odds to a chance. -150 is 60%; +200 is 33.3%.
- Remove the cut. Compare both sides of the bet (over and under) across several books, ideally including a sharp book like Pinnacle, and scale them so they add to 100%. That's the fair chance.
- Multiply the fair chances. Four legs at 40%, 50%, 60% and 30% is 0.4 × 0.5 × 0.6 × 0.3 = 3.6%, or about 1 in 28.
- Compare with the payout. 1 in 28 deserves about +2,680. If the book pays +1,900, it keeps about 28%.
Same parlay, different payouts
Here is one real four-leg ticket from NFL Week 5, 2026 (receiving-yard overs for Malik Nabers, Darnell Washington, Devaughn Vele and Sam LaPorta), $10 at each book. Prices as of October 9, 2026.
| Book | Nabers | Washington | Vele | LaPorta | $10 wins |
|---|---|---|---|---|---|
| DraftKings | +521 | +790 | +391 | +770 | $23,599 |
| FanDuel | +520 | +750 | +390 | +700 | $20,648 |
| Fanatics | +450 | +700 | +360 | +650 | $15,170 |
Same four legs, $8,429 apart. Prices move all week; check them before you bet.
Books price each leg on their own, and the differences multiply. Alt lines (bigger numbers like 100+ yards) vary the most from book to book. The machine compares every book that offers all your legs at the same line, on every ticket.
What changes the math
- Same-game parlays are repriced by the book for correlation, so their payout isn't the legs multiplied.
- Lines move. A price from this morning may be gone tonight.
- Some legs have no two-sided market. Alt lines and some touchdown props only trade one way, so their fair chance is an estimate, not a market price. The machine marks those.
- Most parlays lose. Real odds tell you what you're holding; they don't make it a good bet.
Do it in three seconds
Moonshot Parlays builds a ticket from real sportsbook lines, prices every leg against the whole market, and shows its real odds and what each book pays. Free, no sign-up.
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