Parlay
calculator
Add each leg's odds. You get the combined price, what it pays, and the chance it hits if every price were fair.
Enter odds as American (-110, +150), decimal (1.91) or fractional (10/11). Everything is worked out in your browser. Nothing is saved or sent.
How it works
Legs become decimal odds and multiply. Stake × the result is your return; 1 ÷ the result is the break-even chance. A Push counts as 1.00, a Lost leg sinks it.
The catch with parlays
Every leg carries the site's cut and the cuts multiply. That gap is why sites push parlays. Keep the stake small.
Questions
How are parlay odds worked out?
Convert each leg to decimal odds and multiply them. A $10 two-leg parlay at -110 and -110 is 1.909 × 1.909 = 3.645, so it returns $36.45, or +264 in American odds.
What happens when a leg pushes?
At most sites a pushed or void leg drops out and the parlay pays at the odds of the legs left. Mark a leg as Push here to see that. Some sites grade differently, so check the house rules.
Why is the chance of hitting so low?
Each leg has to win, so the chances multiply. Four coin-flip legs hit about 1 time in 16. The break-even chance shown is what the parlay price needs, and each leg carries the site’s cut, so it adds up.
Do social sportsbooks price parlays the same way?
Most multiply the legs the same way, but some cap payouts, boost certain parlays, or set their own same-game parlay prices. Use the price the site shows when it differs.
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These calculators do math, not predictions. No price is a sure thing: sites can change lines, cancel picks made at a wrong price, limit accounts, or close markets before you place the other side. Never stake money you need, and never treat picks or trading as a way to make money. 21+. Gambling problem? Call or text 1-800-GAMBLER. Play responsibly.