Parlay Calculator

What the ticket pays—

Give every leg a price and this becomes the payout, and the true EV if you know the fair legs.

Leg 1

Leg 2

Your stake

Kept for every board on the site

Combined+2643.645 decimal

Payout on $100$364.46$264.46 profit

True probability—give each leg a fair % to price it

Break-even needs27.4%what the price demands

Survival through the chainEvery leg multiplies what is left · book-implied legs, so each step is flattered by the vig

100.0%start52.4%after leg 127.4%after leg 2

Show the math

decimal = Π legᵢ= 3.6446

payout = stake × decimal$100.00 × 3.6446 = $364.46

Send this calculation

Your numbers travel in the link — whoever opens it sees this exact calculation.

KeyboardUp and down arrows step any price — 5 cents on an American number, a hundredth on a decimal. Enter moves to the next field. Slash jumps back to the first one from anywhere on the page.

What this will not claimIndependent-legs math. Same-game legs are correlated and this ticket EV does not model that — for correlation-priced parlays use the sport parlay desks.

Related calculators

Round Robin CalculatorEvery k-leg parlay from your picks — total risk, max payout, and each miss scenario priced.Teaser CalculatorThe break-even per-leg win rate your teased legs must clear at the payout you're quoted.Expected Value CalculatorYour price vs the fair probability — EV%, fair odds, and the Kelly-suggested stake.All 13 calculators →

How are parlay odds calculated?

A parlay's decimal odds are the product of its legs' decimal odds — two −110 legs multiply to 3.64, about +264 — and its true expected value is the product of the legs' fair probabilities times that payout.

How it works & common questions

Independent-legs math is the reference: same-game legs are correlated, and this page says so rather than pretending otherwise. Correlation-priced tickets live on the sport parlay desks.

How it works

Enter each leg's price. Add up to ten legs; the combined odds multiply live.
Optionally add fair probabilities. Each leg's devigged chance turns the payout into a true EV.
Read payout and EV. Book-implied probability versus your true probability — the gap is the book's parlay margin.

Why do parlays have higher hold than straight bets?

Because the vig on each leg multiplies through the ticket: three legs each carrying ~2.4% of margin compound to roughly 7% against you before correlation pricing makes it worse. A parlay is only +EV when the legs themselves are +EV by more than the compounded vig.

Dynatyze Betting is analytics and education for people 21 and over. It is not a sportsbook: no wager is ever placed on Dynatyze — the tools help you find and price the best available bet elsewhere. If gambling stops being fun, help is free and confidential at 1-800-GAMBLER.