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15 Team Parlay Odds Calculator

Reviewed by Calculator Editorial Team

This 15-team parlay odds calculator helps you determine the combined probability and potential payout for a parlay bet involving 15 different sporting events. Enter the odds for each team and calculate the total probability and potential return on your bet.

How to Use This Calculator

Using the 15-team parlay odds calculator is straightforward:

  1. Enter the odds for each of the 15 teams in your parlay bet.
  2. Select whether the odds are in American, Decimal, or Fractional format.
  3. Click "Calculate" to see the combined probability and potential payout.
  4. Review the results and decide whether to place your bet.

The calculator will show you the total probability of all 15 events happening together and the potential payout if all bets win.

How Parlay Odds Are Calculated

A parlay bet combines multiple individual bets into a single wager. The total probability of a parlay is calculated by multiplying the probability of each individual event. The formula for calculating the combined probability is:

Combined Probability = (1 / Odds₁) × (1 / Odds₂) × ... × (1 / Odds₁₅)

The potential payout is calculated by multiplying the combined probability by the total amount wagered. The formula for the potential payout is:

Potential Payout = Combined Probability × Total Wager

For example, if you bet $100 on a 15-team parlay with a combined probability of 0.0001, your potential payout would be $10.

Note: Parlay bets are high-risk wagers. The probability of all 15 events happening together is very low, and the potential payout is significant. Only bet what you can afford to lose.

Worked Example

Let's look at an example of a 15-team parlay:

  1. Team 1: +200 (American odds)
  2. Team 2: +300
  3. Team 3: +150
  4. Team 4: +400
  5. Team 5: +250
  6. Team 6: +180
  7. Team 7: +350
  8. Team 8: +220
  9. Team 9: +450
  10. Team 10: +160
  11. Team 11: +320
  12. Team 12: +280
  13. Team 13: +420
  14. Team 14: +190
  15. Team 15: +380

Using the calculator, we find that the combined probability is approximately 0.00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000