Parlay
Parlay Calculator: Parlay Odds, Payout and Combined Win Probability
The parlay calculator multiplies the odds of every leg you pick to give total odds, payout and profit. A parlay pays only if every leg wins, and the price is the product of the leg prices: a $100 three-leg parlay at +60 (1.6), +70 (1.7) and +80 (1.8) returns $489.60. The calculator also shows the combined probability every leg needs to hit, so you can see the bar a long parlay has to clear before you place it.
Parlay Calculator
ParlayParlay odds, payout, profit and the chance every leg hits
Total odds = odds₁ × odds₂ × … × oddsₙ; payout = stake × total oddsImplied probability of every leg hitting = 1 ÷ total odds (includes vig, so the true probability is lower).
How to use the parlay calculator
Enter your stake, then the odds for each leg in decimal form (-110 is 1.91; the Odds Converter handles American prices). The calculator updates total odds, payout and profit as you go. Every leg you add multiplies the total odds, but the combined probability drops with it, and those two numbers have to be read together.
The math is the same one DraftKings, FanDuel and every other US sportsbook uses: leg odds multiply, so -150 × +200 works out to +400. There is no bonus and no cap on the odds themselves; sportsbooks do set maximum payouts, which vary by book. The calculator accepts up to 12 legs.
If your question is 'I went 3 for 4, do I get anything?', the answer for a straight four-leg parlay is no: one loss kills the whole ticket. To keep some payout when one leg misses you need a round robin (by 2s, by 3s), which has its own calculator.
Why parlay odds look generous but rarely pay long term
Every leg carries the sportsbook's hold, and multiplying the legs compounds it. On standard -110 (1.91) pricing the book's hold on a straight bet is about 4.5%, but a two-leg parlay of -110 legs carries a hold of roughly 9%, three legs 13%, four legs 17% and five legs 20.8%. The payout grows, but so does the book's built-in edge.
The state numbers back this up: in 2025 New Jersey sportsbooks kept about 20% of parlay handle against 5% on other bets, and Illinois reported a 14.3% parlay hold in October 2025 on an average parlay wager of $25.38. Parlays make sense only when you have a clear edge on every leg and you limit the ticket to those legs. Compare the calculator's combined implied probability with your own estimate; the ticket has value only if yours is higher.
Parlay rules, voided legs and taxes
If a leg is voided, for example a postponed game or a pushed whole-number spread, most US sportsbooks remove that leg at odds of 1.00 and pay the parlay on the remaining legs rather than cancelling the ticket. House rules differ, so check your book. Same game parlays are priced differently because the legs are correlated, so simple multiplication may not match the book's SGP price.
In the US, all gambling winnings are taxable; from tax year 2026 only 90% of losses are deductible, and only if you itemize. This page is not tax advice. Sportsbooks issue Form W-2G on large payouts, and the calculator flags a tax note when the result is a big win. The exact amount withheld depends on the sportsbook and the state you bet in, so check your operator’s terms.
Example: $100 three-leg parlay at +60 (1.6), +70 (1.7), +80 (1.8)
- Total odds = 1.6 × 1.7 × 1.8 = 4.896, or about +390 in American odds.
- Payout = $100 × 4.896 = $489.60; profit = $389.60.
- Implied probability of every leg hitting = 1 ÷ 4.896 = 20.4%, so the market prices this as roughly a one-in-five shot.
If you put each leg at 65%, the combined probability is 0.65³ = 27.5%, above the implied 20.4%, and the parlay is +EV. At 55% per leg the combined probability is 16.6%, below the bar, and the ticket should be split into straight bets or skipped.
FAQ
How many legs can a parlay have?+
This parlay calculator accepts up to 12 legs. Sportsbook limits vary by book and by market, and the practical ceiling is lower: each extra leg multiplies the odds but also compounds the hold, so long parlays are the worst-priced bets on the board.
How are parlay odds calculated?+
Multiply the decimal odds of every leg, then multiply by the stake. A $100 parlay at +60 (1.6), +70 (1.7) and +80 (1.8) pays $100 × 1.6 × 1.7 × 1.8 = $489.60, a profit of $389.60. In American terms the combined price is about +390.
Does a parlay pay if I win 3 of 4 legs?+
Not as a straight parlay: one losing leg loses the whole ticket. To be paid when one leg misses you need a round robin, which breaks your picks into smaller parlays. The round robin calculator shows the cost and the payout in every one-loss scenario.
Are parlay winnings taxed?+
In the US, all gambling winnings are taxable; from tax year 2026 only 90% of losses are deductible, and only if you itemize. This page is not tax advice. Sportsbooks report large wins to the IRS on Form W-2G; see IRS Topic 419 for the current rules. The exact amount withheld depends on the sportsbook and the state you bet in, so check your operator’s terms.
Can I parlay bets from the same game?+
Most US sportsbooks offer same game parlays, but the legs are correlated, so the book prices the SGP with its own model rather than multiplying the individual odds. This calculator gives the straight multiplication, which will usually differ from the SGP price you are quoted.
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Open calculator →Done calculating? See how the AI reads today’s games
A calculator answers the formula; the AI answers the game. Mysports.AI compares model win probability against market odds every day and flags the prices that look mispriced.
For informational purposes only. Sports betting is legal in 39 states and D.C.; rules and minimum age vary by state. 21+. Gambling problem? Call 1-800-GAMBLER.
Odds and vig conventions follow standard US sportsbook pricing (-110 on spreads and totals). The tax line is based on IRS Topic 419 and the Form W-2G instructions (rev. 01/2026); it is not tax advice.