Free tool
Parlay Calculator
Add your selections to get the combined odds, payout, profit and real chance of an accumulator bet.
Parlay calculator
Combined odds
5.40
Payout
$54.00
Profit
$44.00
Implied prob.
18.5%
How a parlay works
A parlay (also called an accumulator or acca) combines several selections into one bet. The odds multiply together, so the potential payout grows quickly — but every leg must win, which makes it far less likely to land than any single bet.
To find the combined odds, multiply each selection's decimal odds. The implied probability is 1 ÷ combined odds — a useful reality check on how long the parlay really is.
Worked example
Three selections at 1.50, 2.00 and 1.80, $10 stake.
Combined odds = 1.50 × 2.00 × 1.80 = 5.40.
Payout = 10 × 5.40 = $54.00 ($44 profit). Implied probability ≈ 1 ÷ 5.40 = 18.5%.
Frequently asked questions
How are parlay odds calculated?
Multiply the decimal odds of every selection together. Three legs at 1.50, 2.00 and 1.80 give combined odds of 1.50 × 2.00 × 1.80 = 5.40. Your payout is the stake times the combined odds.
What is the payout of a parlay?
Payout = stake × combined odds. A $10 stake at combined odds of 5.40 returns $54.00, for a $44.00 profit. Every leg must win for the parlay to pay out.
Why are parlays riskier than single bets?
Because all selections must win. The implied probability of the parlay is the product of each leg's probability, so it drops fast. Higher combined odds come with a much lower chance of winning.