Parlay Payout Calculator

Each leg's American odds is converted to a decimal multiplier, all legs' multipliers are multiplied together to get the combined parlay odds, and the payout is your stake × combined odds. Every single leg must win for the parlay to pay out at all.

For positive odds (e.g. +150): multiplier = 1 + (odds ÷ 100). For negative odds (e.g. -150): multiplier = 1 + (100 ÷ |odds|). A moneyline favorite at -150 has a multiplier of about 1.667; an underdog at +150 has a multiplier of 2.50.

Because the combined odds multiply together across every leg, and the true probability of every leg hitting is much lower than any single leg — the payout scales up to (roughly) compensate for that lower combined probability, which is also why parlays have a much higher house edge than straight bets.

No — this calculates the mathematically 'true' combined odds by multiplying each leg's decimal odds. Many sportsbooks apply their own parlay pricing (sometimes slightly worse than the pure mathematical product) for certain bet types, so your actual offered payout may differ slightly.

Implied probability = 1 ÷ combined decimal odds, expressed as a percentage. It's the break-even chance of winning that the combined odds imply — the actual probability that every leg hits is usually somewhat lower than this, which is the sportsbook's built-in edge.