Parlay Payout Calculator: How Odds Multiply Your Winnings

Author: Mateusz Mazur

Date: 10.11.2025

Parlay betting is the most popular way for American bettors to combine multiple wagers into a single ticket for a chance at a massive payout. A parlay links two or more individual bets, called “legs,” and the only way to win is if every single leg is correct. This high-risk, high-reward nature exponentially increases the potential winnings because the odds of each bet are multiplied together.

The Parlay Calculator below uses the math of American odds to instantly show you the total combined odds and the potential profit from your wager. It removes the complex steps of manual calculation, allowing you to quickly see the value of combining your picks.

Parlay Winnings Calculator

Parlay Calculator

Enter your stake and up to 6 American odds (e.g. +150, -120). We’ll convert them to decimal, multiply, and show your potential payout.


Leg odds

example: +150, -120, +200

Results
Parlay decimal odds: —
Potential return: —
Profit: —

Empty legs are ignored. American odds are converted to decimal using standard sportsbook formula.

Understanding Parlay Math with American Odds

Calculating parlay odds is tricky because American odds are presented differently depending on whether the selection is an underdog (positive odds) or a favorite (negative odds). Sportsbooks use a mathematical process that involves converting all odds to a decimal multiplier before multiplying them together.

The Core Principle: Odds Multiplication

The fundamental rule of a parlay is that the odds of each successful leg are factored into the next. This compounding effect is what leads to huge payouts.

For manual calculation, the math follows these steps:

  1. Convert American Odds to Decimal Multipliers:
      Positive Odds (Underdog, e.g., +200): Divide the odds by 100, then add 1.

      Example: becomes

      Negative Odds (Favorite, e.g., -150): Divide 100 by the absolute value of the odds, then add 1.

      Example: becomes

  2. Multiply the Decimal Multipliers: Multiply the decimal multiplier from every leg together to get the total parlay multiplier.
  3. Calculate the Payout: Multiply the total parlay multiplier by your initial stake (wager amount). The result is your total return (winnings plus original stake).

While this process is complex to do by hand, the calculator does it instantly.

What a Parlay Calculator Does for You

The primary function of this tool is to provide immediate transparency for high-risk bets.

  • Instantly Calculates Total Odds: You enter the American odds for two or more selections, and the calculator determines the final combined American odds (e.g., converts from +150, -110, +220 to a final single odds like +1580).
  • Determines Potential Payout: It takes your wager amount and applies the final odds to show your exact total profit and return.
  • Handles Favorites and Underdogs: It manages the different formulas for positive and negative American odds automatically.

How to Use the Parlay Calculator

  1. Enter Your Wager: Input the dollar amount you plan to risk on the parlay.
  2. Input the Odds for Leg 1: Enter the American odds for your first selection (e.g., +150, -110).
  3. Add More Legs: Click the “Add Leg” button and input the odds for your subsequent selections. You can typically combine up to 15 or more selections, though three to four legs are most common.
  4. See Results: The calculator instantly displays the Total Parlay Odds and your Total Payout.

Parlay Betting Tips for American Bettors

Parlays are exciting due to their huge potential returns, but the low probability of success means they should be approached carefully.

  • Limit the Legs: The single biggest mistake is adding too many legs. While a 10-leg parlay is tempting, the implied probability of success drops drastically. Stick to two, three, or four-leg parlays for the best balance of risk and reward.
  • Avoid Correlated Bets: Sportsbooks generally restrict “correlated parlays” where the outcome of one leg makes the outcome of another leg more likely (e.g., parlaying a team to win and their star player to score three goals in the same game). This is done to prevent bettors from unfairly increasing their edge.
  • Manage Pushes: If a game in your parlay ends in a “push” (a tie against the spread or total), that leg is typically removed from the parlay. The overall odds are recalculated based on the remaining legs, but your bet is still live.