Parlay Calculator
Enter American, decimal or fractional odds for each leg to see your parlay odds, payout and implied probability.
How to use the parlay calculator
Type your wager and the odds for each leg. American odds such as -110 or +150 work, and so do decimal (1.91) and fractional (10/11) prices.
Add as many legs as you like with the button below the list and remove any leg with the cross. The parlay odds, payout and profit update as you type.
Implied probability shows the chance the odds give for every leg winning together. It is a quick reality check on long parlays.
Example: A $20 three-leg parlay at -110, +150 and -125 pays $171.82: the combined odds are +759 (8.59 decimal). The implied probability of hitting all three is about 11.6%.
Frequently asked questions
How are parlay odds calculated?
Each leg is converted to decimal odds and the decimals are multiplied together. The product times your wager is the payout.
What happens if a leg pushes?
Most sportsbooks drop a pushed leg and pay the parlay on the remaining legs. Remove that leg in the calculator to see the new payout.
Why does a parlay pay more than single bets?
Every leg must win, so the chance of success falls with each leg added. The payout grows to reflect that lower probability.
Can I mix American and decimal odds?
Yes. Each box accepts any format and the decimal value is shown next to it.