Parlay Calculator

Calculate parlay odds and payout instantly. Add up to 12 legs in any combination of American or decimal prices. Exact math, runs entirely in your browser.

    Combined odds

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    decimal: ·

    Total payout

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    Profit

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    You enter the odds for each leg; this tool does the exact math in your browser. Payout includes your returned stake. Profit is payout minus stake.

    How parlays work

    • All legs must win. A single losing leg loses the entire parlay.
    • A push, void, or cancelled leg typically reduces the parlay to the remaining legs, and the exact rules vary by sportsbook.
    • This calculator uses standard cross-game parlay math (multiplying independent leg prices). Same-game parlays are priced differently by sportsbooks because of correlation between legs, and those prices are not reflected here.

    How parlay math works

    A parlay multiplies. Convert each leg to decimal odds, multiply them together, and that product is the parlay's combined decimal price. Convert back to American to display, then multiply by your stake for the payout.

    For example, three -110 legs each convert to a decimal of about 1.909. Multiply: 1.909 times 1.909 times 1.909 is about 6.958. Subtract 1 and multiply by 100, and that is roughly +596 in American odds. A $100 stake returns about $695.79, of which $595.79 is profit, but only if all three legs win.

    Why every leg matters

    The combined probability is also the product of each leg's probability, so adding legs raises the payout and lowers the chance of winning at the same time. Three coin-flip legs (50 percent each) imply a 12.5 percent combined chance. The more legs you add, the larger the gap between the payout and the underlying odds of hitting all of them.

    Same-game parlays are different. Sportsbooks price the legs as correlated, so a same-game parlay usually pays less than this independent-leg math suggests. Use this calculator for cross-game parlays, and confirm same-game prices at the sportsbook.

    Shop the line first

    Before you place a parlay, the price of each leg varies by sportsbook. A few cents of difference per leg compounds across a multi-leg ticket. See today's biggest line differences and read our line shopping guide and American odds primer.

    For informational and entertainment purposes only. MatchupOdds does not accept wagers and is not a sportsbook. This is not betting advice.

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    Frequently Asked Questions

    What is a parlay?

    A parlay combines two or more individual bets (legs) into one wager. Every leg must win for the parlay to pay. The combined odds compound, so a parlay pays much more than the same bets placed separately, but only if every leg hits.

    How are parlay odds calculated?

    Convert each leg to decimal odds, multiply them all together, then convert the result back to American (or whatever format you prefer). This calculator does it automatically.

    Why are parlays harder to win?

    A parlay's true probability is the product of each leg's probability. Two coin flips have a 25% combined chance, three coin flips 12.5%, and so on. Books love parlays because the implied probability built into the combined price typically lags the math.

    What is a same-game parlay?

    Same-game parlays combine multiple bets within one game. Books price the legs as correlated, which means same-game parlays pay less than the math would suggest if the legs were independent.

    Can I add player props to a parlay?

    Yes. Open a game in the builder, expand its player props, and add an over or under just like a game line. The builder only treats a sportsbook as offering your prop when it posts the exact same player, market, and line, so your slip is never priced against a different number. Props from the same game are shown as an estimate only, because books price same-game legs as correlated.

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