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Parlay Odds Calculator

Combined odds and payout for your parlay

How it is calculated

Odds are read as decimal prices (for example 1.80 or 2.10), where the number already includes your returned stake. An odds value that starts with a plus or minus sign is read as American odds and converted first: +X → 1 + X ÷ 100 and −X → 1 + 100 ÷ X, so +150 becomes 2.50 and −200 becomes 1.50. American odds must be at least 100 in size, so −50 shows no result. The legs are then multiplied: combined = odds1 × odds2 × odds3, then payout = stake × combined and profit = payout − stake. Legs 1 and 2 are required and each decimal price must be at least 1.00; leg 3 is optional and is left out of the product when empty. The stake must be above zero. Amounts are shown in dollars. The calculation assumes every leg wins; a standard parlay pays nothing if one leg loses, and rules for pushes or voided legs differ by bookmaker.

Worked example

You stake 10 on three legs at decimal odds 1.80, 2.10 and 1.50. Combined odds: 1.80 × 2.10 = 3.78, and 3.78 × 1.50 = 5.67. Payout: 10 × 5.67 = $56.70. Profit is the payout minus the stake, 56.70 − 10 = $46.70. With only the first two legs the combined odds would be 3.78 and the payout $37.80.

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Common mistakes

  • Typing American odds without the sign, such as 150 instead of +150. Without a plus or minus the number is read as a decimal price, so odds of 150 are used and the payout is wildly inflated. Include the sign (+150 is 2.50).
  • Entering fractional odds like 5/2 as 2.5. Fractional odds exclude the stake, so decimal odds are 3.50.
  • Entering a decimal price below 1.00, such as 0.9, or a stake of zero. These show no result, since a winning leg cannot return less than the stake.
  • Reading the result as a probability. A large combined payout means every leg must win, and the chance of that falls with each added leg.
  • Confusing profit with payout. The payout includes your stake back; profit is what you gain above it.

About this calculator

A parlay (or accumulator) bet combines multiple individual bets, called legs, into one wager that only pays out if every single leg wins; in decimal odds format the combined odds are simply the product of each leg's odds, Combined odds = odds₁ × odds₂ × odds₃ × …, and the payout is that combined figure multiplied by the stake.

Multiplying odds this way compounds both the payout and the risk exponentially: three legs at even-money decimal odds of 2.00 each combine to 8.00, an 8x payout, but the probability of hitting all three drops just as fast, which is exactly why sportsbooks favor parlays — the expected payout to the bettor is lower than betting each leg separately despite the flashy combined number.

Sports bettors building multi-leg tickets, sportsbook staff explaining payout structures, and bettors comparing a parlay's payout against betting each leg individually all use this multiplication to see the real odds behind an advertised parlay payout before placing a wager.

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Comments (1)

  • Editorial team

    A handy sanity check is the break-even chance: one divided by the combined figure. The default legs of 1.5 and 2.0 combine to 3.00, so the ticket only pays off long-term if you think all legs land together about one time in three. Three American -110 legs combine to 6.96 here. The tool takes up to three legs; would a fourth or fifth leg field be useful to you?

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