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Enter each leg's odds and your wager to get the combined parlay odds, total profit, and payout - American or decimal, as many legs as you like.
Add each leg's odds and your wager to see the combined parlay odds and payout.
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Get StartedEstimated typical sports margin by book - illustrative industry ranges, not Spindex-measured.
A parlay calculator (or parlay odds calculator) combines multiple bets into a single wager and shows you the combined odds, total payout, and profit. Parlays link several picks - called legs - into one bet with a much bigger payout, but there's a catch: every leg has to win. If even one leg loses, the whole parlay loses.
Parlay odds aren't added together - they're multiplied. To calculate them by hand, convert each leg's odds into decimal format, then multiply all the decimals together. The result is your combined parlay odds. Multiply that by your wager and you get the total payout; the profit is the payout minus your stake.
For example, say you parlay three +100 favorites. Each +100 leg is 2.00 in decimal odds. Multiplying gives 2.00 x 2.00 x 2.00 = 8.00, which converts to +700 in American odds. A $100 wager would return $800 total - a $700 profit - but only if all three legs hit. This calculator runs that math instantly as you add or remove legs and lets you switch between American and decimal odds.
Because odds multiply, payouts grow fast as you add legs. Two modest favorites might pay around +260; a fourth or fifth leg can push the same wager into the thousands of percent. That upside is what makes parlays popular, but it comes from stacking probability against yourself - the chance of all legs winning is the product of each leg's individual chance.
Enter your total wager, then type each leg's odds. The calculator shows the combined parlay odds, your total payout, and your profit in real time. Use "Add leg" to stack more selections and the format toggle to enter American (+150, -110) or decimal (2.50, 1.91) odds. It works for moneylines, spreads, and totals across any sport.
More legs mean a bigger payout but a lower probability of cashing - and the sportsbook's edge compounds with each one. Many bettors keep parlays short (two to four legs), stick to bets they'd make individually, and treat them as small, high-upside plays rather than a steady income strategy. Use the calculator to see exactly what you're risking versus what you're chasing before you place the bet.
Convert each leg's odds to decimal, then multiply all the decimals together to get the combined parlay odds. For example, two +100 legs are 2.00 each: 2.00 x 2.00 = 4.00, which equals +300 in American odds. Add a third +100 leg and it becomes 2.00 x 2.00 x 2.00 = 8.00, or +700.
Multiply your wager by the combined decimal odds for the total payout; subtract your wager for the profit. A $100 wager at 4.00 combined odds returns $400 total ($300 profit). This calculator does it automatically as you add legs.
Most sportsbooks allow anywhere from 2 to 10+ legs. Every leg must win for the parlay to cash. This calculator supports as many legs as you want - just use 'Add leg'.
Because the odds multiply rather than add. Each leg you stack lengthens the combined odds dramatically, which is why a handful of modest favorites can turn into a huge payout - and why parlays are much harder to win than single bets.
Parlays are high-variance: big upside, low hit rate. The combined house edge also grows with each leg, so over the long run they're tougher than straight bets. They're best treated as small, high-upside plays rather than a core strategy.
A same-game parlay (SGP) combines multiple bets from a single game. The math is similar, but books often adjust the odds for correlation between legs, so an SGP payout may differ from simply multiplying the standalone odds.
18+ only · Gamble responsibly · Tools are for informational purposes only.