Parlay calculator
Multi-bet combined odds & payout
Calculate combined odds and payout for accumulator bets with up to 12 selections.
What is a parlay?
A parlay (also called accumulator, acca, multi-bet, or combo) combines several selections into a single bet. All selections must win for the parlay to pay out — if even one loses, the whole thing loses. In exchange, the odds multiply, which is why a 5-leg parlay at 2.00 each pays 32x your stake instead of 10x. Convert formats between legs with our Odds Converter, and if your parlay starts winning consider locking profit with Hedge calculator.
See also: Kelly criterion, Hedge calculator, Round Robin parlay
How to use this calculator
- 1Default is 3 legs. Click 'Add leg' to add more (up to 12), or use the trash icon to remove one.
- 2Type each selection's decimal odds. Combined odds update live.
- 3Enter your stake at the bottom to see total payout and net profit.
Example: a 4-leg weekend acca
You back four favourites: Man City at 1.40, Bayern at 1.35, PSG at 1.55, and Real Madrid at 1.50. Combined: 1.40 × 1.35 × 1.55 × 1.50 = 4.39. A €100 stake returns €439 if all four win. Sounds great — but the implied probability is 1 ÷ 4.39 = 22.8%. The bookmaker thinks you'll lose more than 77% of the time on this bet. Parlays look attractive but the house edge compounds with every leg.
The parlay trap
Each leg you add multiplies the bookmaker's margin too. A single bet at a 5% margin bookmaker has a 5% house edge. A 5-leg parlay has roughly 1 − (0.95)⁵ = 23% house edge. This is why bookmakers love parlays and run advertising around them. Use parlays for entertainment, not for serious profit.
When to actually use parlays
- When you've genuinely found value in multiple correlated outcomes (rare)
- Small stakes for entertainment value on big match weekends
- Using a free-bet promo where you can't lose your own money
- Never with money you can't afford to lose multiple in a row
Frequently asked questions
What is the Parlay calculator calculator?
A parlay (also called accumulator, acca, multi-bet, or combo) combines several selections into a single bet. All selections must win for the parlay to pay out — if even one loses, the whole thing loses.
How does the Parlay calculator calculator work in practice?
You back four favourites: Man City at 1.40, Bayern at 1.35, PSG at 1.55, and Real Madrid at 1.50. Combined: 1.40 × 1.35 × 1.55 × 1.50 = 4.39. A €100 stake returns €439 if all four win. Sounds great — but the implied probability is 1 ÷ 4.39 = 22.8%. The bookmaker thinks you'll lose more than 77% of the time on this…
What is the most common mistake with the Parlay calculator calculator?
Each leg you add multiplies the bookmaker's margin too. A single bet at a 5% margin bookmaker has a 5% house edge. A 5-leg parlay has roughly 1 − (0.95)⁵ = 23% house edge. This is why bookmakers love parlays and run advertising around them. Use parlays for entertainment, not for serious profit.
When should I use the Parlay calculator calculator?
When you've genuinely found value in multiple correlated outcomes (rare). Small stakes for entertainment value on big match weekends. Using a free-bet promo where you can't lose your own money.