Parlay Calculator
Enter your odds, set your wager, and see your payout instantly.
How to Use the Parlay Calculator
Enter the odds for each leg of your parlay in whatever format you prefer — American (-110, +200), decimal (1.91, 3.00), or fractional (10/11, 2/1). Set your wager amount and the calculator instantly shows your total payout, profit, combined parlay odds, and implied probability of hitting.
You can add up to 20 legs. Use the name field (visible on desktop) to label each pick so you can reference your ticket later.
How Parlay Payouts Are Calculated
Every leg gets converted to decimal odds, then those values are multiplied together. That product is your combined decimal multiplier. Multiply it by your wager to get total payout, and subtract the wager to get profit.
For example: three legs at -110 each convert to 1.909 decimal. Multiply: 1.909 × 1.909 × 1.909 = 6.966. A $100 wager pays $696.60 total, or $596.60 profit — roughly +597 in American odds.
Standard Parlay Payouts at -110 Odds
| Legs | True Odds | Payout on $100 | Win Probability |
|---|---|---|---|
| 2 | +264 | $364.46 | 27.5% |
| 3 | +597 | $696.60 | 14.4% |
| 4 | +1,228 | $1,330.54 | 7.5% |
| 5 | +2,441 | $2,541.17 | 3.9% |
| 6 | +4,752 | $4,852.70 | 2.0% |
| 7 | +9,183 | $9,267.84 | 1.1% |
| 8 | +17,649 | $17,694.79 | 0.6% |
What Is a Parlay Bet?
A parlay combines two or more individual bets into a single wager. Every leg must win for the parlay to pay out — if any one pick loses, the entire bet loses. In exchange for that added risk, the potential payout increases significantly with each leg you add.
Parlays are popular because they offer large returns from small stakes. But the math works against you: sportsbooks build vig (their profit margin) into every leg, and that edge compounds with each pick you add. Understanding the implied probability — shown above for each leg and the overall parlay — helps you evaluate whether the potential reward justifies the true risk.
Tips for Smarter Parlay Betting
Keep legs low. Two or three-leg parlays offer meaningfully better payouts than straight bets without cratering your win probability. Once you get past 4–5 legs, the math gets brutal.
Shop your lines. Because parlay odds multiply, even small differences in individual leg prices compound into significant payout differences. A line that's -108 instead of -110 matters more in a parlay than on a straight bet.
Use the EV calculator. Before locking in a parlay, check whether each leg has positive expected value on its own. A parlay is only as strong as its weakest leg — one bad pick poisons the entire ticket.
Avoid correlated parlays blindly. Same-game parlays are popular but often carry hidden vig. Sportsbooks adjust the combined odds on correlated legs to protect their margin, so the posted payout is usually worse than what the math would give you on uncorrelated picks.