Parlay & accumulator calculator
Add each selection's odds in any format and your stake. Every selection has to win for the bet to pay out.
Written by BettingSeeker Editorial Team
How a parlay works
A parlay (accumulator) turns several selections into one bet. The winnings from each selection roll on to the next, so the odds multiply. That is why small stakes can return large amounts, and also why most parlays lose: one wrong result and the whole bet is lost.
Worked example
A 10 stake on three selections at decimal odds of 2.00, 1.50 and 3.00:
- Total odds: 2.00 × 1.50 × 3.00 = 9.00
- Returns: 10 × 9.00 = 90.00
- Profit: 90.00 − 10 = 80.00
The formula
Returns = stake × (odds₁ × odds₂ × … × oddsₙ), using decimal odds. Profit = returns − stake.
Frequently asked questions
Is a parlay the same as an accumulator?
Yes. "Parlay" is the US name and "accumulator" or "acca" is the UK name for one bet that combines several selections. Every selection must win for the bet to pay out.
How are parlay odds calculated?
Multiply the decimal odds of every selection together. Three selections at 2.00, 1.50 and 3.00 give total odds of 9.00.
What happens if one selection is void?
Most bookmakers treat a void leg as odds of 1.00, so the bet continues with the remaining selections. Check your bookmaker's rules, as some sports and markets differ.
Why do accumulators pay more but win less often?
The bookmaker margin compounds with every leg, and the chance of every selection winning falls quickly. Bigger accumulators are higher risk, not better value.