NBA Parlay Calculator
Combine NBA props, spreads, and totals into one ticket — see the combined price and payout instantly.
How to use the NBA Parlay Calculator
A typical NBA parlay might mix a same-night player prop (LeBron over 25.5 points at -115), a moneyline (Celtics -200), and a total (Warriors-Lakers over 224.5 at -110). Multiply the decimal odds for each leg and you have your combined price. NBA props in particular suffer from heavy correlation when you stack from one game — if you are building a same-game parlay, use the price your sportsbook quotes rather than multiplying legs yourself.
A parlay multiplies the decimal odds of every leg together. The more legs you add, the higher the payout — and the lower the win probability. A 4-leg parlay of -110 legs (each 52.4%) wins about 7.5% of the time. The payout looks great, but the math is brutal.
This calculator combines your legs in real time. Enter each leg's odds in whichever format you read fastest — American, decimal, or fractional — and we'll show the combined price, your potential payout, and the implied probability the parlay must hit to break even.
For same-game parlays (SGPs) the math is different — sportsbooks adjust the price down for correlation between legs from the same game. If you're pricing an SGP, use the actual quoted SGP price from your book rather than multiplying the legs yourself.