How the parlay calculator works
A parlay combines two or more bets into a single wager. Every leg must win for the parlay to pay out. Because the odds of each leg multiply together, parlays produce much larger payouts than single bets — but a far smaller chance of winning. Switch the odds format above to enter your legs in American, decimal or fractional notation; the math is identical either way.
Worked example
You bet $50 on a 3-leg parlay: Leg 1 at -110, Leg 2 at +130, Leg 3 at -140.
Frequently asked questions
How are parlay odds calculated?
Each leg's odds are converted to decimal form, all the decimals are multiplied together, and the result is converted back to your chosen format. Your payout is your stake multiplied by that combined decimal figure.
Why are parlays risky?
Every single leg must win. A four-leg parlay of even-money coin flips has only a 6.25% chance of cashing, even though each leg individually is 50/50.
Does the bet slip save my parlay?
Yes. Tap “Add to bet slip” and the parlay is saved on your device. You can mark it won or lost later to track your running profit and loss across every tool on the site.