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Parlay Calculator: Payout, True Odds & Vig
Add your legs in American or decimal odds to see the payout. Enter the other side of each leg and we strip the vig to show the true chance of hitting, the fair price, and how much the book is keeping.
Optional: in Other side, enter the opposite price (the under, or the other team) to strip the vig and get the true probability.
—
| Parlay odds | Payout | Profit |
|---|---|---|
| — | — | — |
| Implied probability | True (no-vig) probability | Fair odds | Vig / book edge |
|---|---|---|---|
| — | — | — | — |
Assumes independent legs. Same-game parlays are priced with correlation and usually pay less.
How to use this calculator
Choose American or decimal odds and enter your stake. Type each leg’s price; for the true odds, also type the price on the other side of that market (the under, or the other team’s moneyline). The green or red line shows your payout and how far it is from a fair price. Add up to 10 legs, and copy the result to share the exact parlay.
How vig compounds in a parlay
| Legs at -110/-110 | Paid | Fair | Book edge |
|---|---|---|---|
| 1 | +91 | EVEN | 4.5% |
| 2 | +264 | +300 | 8.9% |
| 3 | +596 | +700 | 13.0% |
| 4 | +1228 | +1500 | 17.0% |
| 5 | +2436 | +3100 | 20.8% |
| 6 | +4741 | +6300 | 24.4% |
Each leg adds its own vig, so the book’s edge grows fast. Look for legs where the price has moved in your favor — the line movement checker shows opening vs current numbers for every NFL game this week. Just need the payout for a single bet? Use the bet payout calculator. Want to lock in a profit on a live parlay? Try the hedge calculator.
FAQ
How do you calculate parlay odds?
Convert every leg to decimal odds and multiply them. Two legs at -110 (1.909 each) make 3.645, or +264, so a $10 parlay pays $36.45. Profit is payout minus stake.
What is the true probability of a parlay?
Remove the vig from each leg (divide its implied probability by the sum of both sides), then multiply the no-vig probabilities. Two -110/-110 legs are 50% each, so the true chance is 25%, a fair price of +300 versus the +264 you are paid.
How much vig is in a parlay?
The book edge is 1 − (true probability × decimal payout). Vig compounds with every leg: one -110 leg costs about 4.5%, a 2-leg parlay about 8.9%, a 4-leg about 17%. That is why parlays are so profitable for sportsbooks.