Parlay Calculator – How to calculate Your Payout
Want to know how much your parlay could pay? Our free parlay calculator lets you combine betting odds from multiple picks and see your potential winnings instantly.
Enter your stake, add the odds for each selection and we’ll calculate your total payout, profit and combined odds. Whether you’re putting together a two-team NFL parlay or combining picks from the NBA, MLB and NHL, the calculator does the math for you.
Parlay calculator
Add the odds for each leg to estimate your parlay’s potential return if every selection wins.
- Total return
- –
- Potential profit
- –
- Implied probability
- –
- Parlay American odds
- –
- Parlay decimal odds
- –
- Parlay fractional odds
- –
Total return includes your stake. Implied probability reflects the odds, not a prediction of the outcome. Figures are rounded estimates. Assumes every leg wins and odds can be multiplied. Same-game parlays may be priced differently; boosts, taxes, and void legs are not included.
How to Use Our Parlay Calculator
Our parlay calculator is easy to use, whether you’re combining two picks or building a larger parlay. Here’s how it works
-
Choose your odds format
The calculator uses American odds by default, but you can switch to decimal or fractional odds if you prefer.
-
Enter your stake
Type the amount you want to bet in the Stake (USD) field. For example, enter 10 for a $10 wager.
-
Add your betting odds.
Enter the odds for each selection under Leg 1 odds, Leg 2 odds and so on. Use values such as -110 or +150 for American odds.
-
Check your results
The calculator automatically updates your potential winnings and combined odds as you make changes.
| Result | What it means |
|---|---|
| Total return | The full amount you’d receive if every pick wins, including your original stake. |
| Potential profit | Your winnings after subtracting your original stake. |
| Implied probability | The break-even probability represented by the combined odds, not a prediction of whether your parlay will win. |
| Parlay American odds | Your combined odds in American format, such as +300. |
| Parlay decimal odds | The same combined odds in decimal format, such as 4.00. |
| Parlay fractional odds | The combined odds expressed as a fraction, such as 3/1. |
How Are Parlay Odds Calculated?
Parlay odds are multiplied together rather than added. Our calculator converts each selection into decimal odds, multiplies them and uses the combined price to calculate your payout.
For example, two picks at +100 each have decimal odds of 2.00. Multiply them together and you get 4.00, which is equivalent to +300 in American odds. A $10 bet at those combined odds would return $40, including $30 in profit.
You don’t need to do these calculations yourself, but understanding the basics can help when comparing parlay prices between sportsbooks. For a more detailed explanation, read our guide to How Parlay Betting Works.
How Does the Vig Affect Your Parlay?
Sportsbooks make money by offering slightly lower payouts than the fair odds would suggest, this is called the vig.
Imagine you’re betting on NFL point spreads where each team has a 50% chance of covering. Without vig, the odds would be +100. That means a winning $10 bet would return $20 but more or less all sportsbooks typically offer -110 instead, so the same winning bet returns just $19.09. That’s 4.55% less than the fair payout.
When you combine picks in a parlay, the difference gets bigger. Each new leg multiplies the payout, but at slightly worse odds than you’d get without vig.
| Number of picks | Payout at -110 | Payout without vig | Vig |
|---|---|---|---|
| 1 | $19.09 | $20.00 | 4.5% |
| 2 | $36.45 | $40.00 | 8.9% |
| 3 | $69.58 | $80.00 | 13.0% |
| 4 | $132.85 | $160.00 | 17.0% |
| 5 | $253.62 | $320.00 | 20.7% |
| 6 | $484.18 | $640.00 | 24.3% |
Why does the percentage keep increasing?
Think of a two-team parlay. The first leg pays 4.55% less than fair odds. The second leg also pays 4.55% less, but that reduction now applies to the already reduced payout from the first leg.
The same thing happens with every additional selection. By the time you’ve combined six picks, your $10 parlay would pay $484.18 instead of $640 at fair odds. That’s a difference of $155.82, or 24.3% less money returned. Note that the sportsbook hasn’t increased its vig on each individual selection. It’s the effect of that same margin being applied repeatedly that makes the difference grow.
Why Same Game Parlay Payouts May Differ
You can use our calculator to estimate a Same Game Parlay (SGP), although the result may not match the price offered by your sportsbook, that’s because selections from the same game can be connected.
Sportsbooks take these relationships into account when setting Same Game Parlay odds. Simply multiplying the individual prices won’t always give you the correct payout. For an accurate SGP calculation, use the combined odds displayed in your sportsbook’s bet slip.