Parlay Calculator | Calculate Parlay Odds

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Our parlay odds calculator can show you your expected payout from a parlay bet based on the amount wagered and the odds of each leg in any format (American, Fractional, or Decimal). 

Simply enter your bet amount and the odds and our parlay calculator will show you your expected profit (“To Win”) and payout (“To Pay”). Need to add more legs to your parlay? Just hit the “Add new line” button!

Parlay Calculator

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To Win


To Pay

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How to Calculate Parlay Odds & Payouts

To calculate your odds and payout from a parlay, there are a few simple steps you have to follow:

  1. Convert the odds of each leg to Decimal odds
  2. Multiply the odds of each leg (in Decimal odds) together. This number is your total payout.
  3. Subtract the amount wagered to find just your profit (not including the amount wagered).

To convert odds to Decimal format, you can use the following equations:

  • Convert positive American odds (favorite) to Decimal odds:  Decimal odds = 1 – (100 / American odds)
  • Convert negative American odds (underdog) to Decimal odds:  Decimal odds = 1 + (American odds / 100)
  • Convert Fractional odds to Decimal odds: Decimal odds = 1 + Fractional Odds

After you multiply the legs together in Decimal format, you can then convert the resulting odds to American or Fractional odds with the following equations:

  • Convert Decimal odds under 2.0 to American: American odds = -100 / (Decimal odds – 1)
  • Convert Decimal odds over 2.0 to American: American odds = (Decimal odds – 1) * 100
  • Convert Decimal odds to Fractional: Fractional odds = Decimal odds – 1

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How Parlay Odds Work

When you place a parlay bet, you get much better odds than you would by simply adding the winnings of each individual bet together.

This is because you need to win each leg of the parlay to win the entire bet.

The following table shows the standard payouts on parlays in which each leg has -110 odds as well as the true probability and fair odds if there were no “juice” or “vig” charged by the sportsbook:

# Parlay Legs

Implied Probability


True Probability

Fair Odds

2 team parlay





3 team parlay





4 team parlay





5 team parlay





6 team parlay





7 team parlay





8 team parlay





9 team parlay





10 team parlay





While you can use the above table to see what your payouts would be, it's easier to use our parlay bet calculator which lets you enter in the odds on each individual leg.

Note that the odds on same game parlays differ based on how related the included selections are to each other. For example, you would receive a lower payout on a parlay that includes Patrick Mahomes to throw for over 2.5 TDs (-110 odds) and the Chiefs to win (-110 odds) than you would by parlaying two teams with -110 odds in different games.

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Dave Rathmanner

Dave Rathmanner is the Founder & CEO of Odds Assist. After struggling to find helpful sports betting resources and honest reviews when he first started betting, he decided to create the site he always wished he had. Dave has been betting on sports since NJ legalized it in 2018 and regularly analyzes sportsbooks to find the best options for bettors. Aside from creating new content for OA readers, Dave is also passionate about researching betting markets, creating models, and developing profitable betting strategies.