Tool · Calculator
Parlay calculator
A parlay (or accumulator) combines several bets into one — the odds multiply, so the payout is much bigger, but every leg has to win. Add your legs in decimal odds and a stake to see the combined odds, your implied chance of cashing, and the full payout.
Leg 1
Leg 2
Leg 3
Stake $
Combined odds
5.40
Implied prob.
18.5%
Payout
$540.00
Profit
$440.00
A parlay multiplies the odds of each leg — bigger payouts, but every leg must win. 3 valid legs.
How parlays work
- Combined odds: multiply every leg's decimal odds together. Three 2.00 legs → 8.00.
- Why the house loves them: each leg carries its own margin, so a parlay stacks the vig. Implied probability falls fast as you add legs.
- Convert first: got American or fractional odds? Use the odds converter, then check each leg's edge with the EV calculator.