Parlay / Accumulator Calculator
Calculate combined parlay odds, potential payout and implied probability for multi-leg accumulators. See how vig compounds across legs.
Parlays (called accumulators in Europe or multis in Australia) multiply the odds of multiple selections into a single bet. A 3-leg parlay at 1.90, 2.10, and 1.80 produces combined odds of 7.18 — turning a $100 stake into $718. The catch is that the bookmaker margin compounds with each leg. A 5% margin on a single bet becomes roughly 14% across three legs, meaning the house edge grows exponentially. This calculator shows you the true combined odds, your potential payout and profit, plus the combined hold/vig across all legs. For APAC bettors placing parlays on Asian handicap markets at books like SBOBET or Dafabet, understanding how the margin stacks is the difference between recreational gambling and informed betting. Sharp bettors rarely parlay more than 2-3 legs because the compounding vig destroys edge. Use this tool to see exactly how much you are giving up.
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Parlays (called accumulators in Europe or multis in Australia) multiply the odds of multiple selections into a single bet. A 3-leg parlay at 1.90, 2.10, and 1.80 produces combined odds of 7.18 — turning a $100 stake into $718. The catch is that the bookmaker margin compounds with each leg. A 5% margin on a single bet becomes roughly 14% across three legs, meaning the house edge grows exponentially. This calculator shows you the true combined odds, your potential payout and profit, plus the combined hold/vig across all legs. For APAC bettors placing parlays on Asian handicap markets at books like SBOBET or Dafabet, understanding how the margin stacks is the difference between recreational gambling and informed betting. Sharp bettors rarely parlay more than 2-3 legs because the compounding vig destroys edge. Use this tool to see exactly how much you are giving up.
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Add legs by entering decimal odds for each selection. Set your stake amount. The calculator instantly shows combined odds, total payout, profit, implied probability, and the combined hold percentage. A hold under 5% is low vig; 15% or more means the book is taking a large cut.
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How does bookmaker margin affect parlays?
Margin compounds multiplicatively across parlay legs. If a single-bet margin is 5%, a 3-leg parlay carries roughly 14% margin and a 5-leg parlay around 23%. This is why sharp bettors prefer single bets or small parlays — the house edge grows with each added leg.
What is the difference between a parlay and a system bet?
A parlay requires ALL selections to win. A system bet (like a Trixie, Yankee, or Lucky 15) combines multiple parlays of different sizes from the same selections, so you can profit even if one or more legs lose. System bets cost more in total stake but reduce variance.
Should I use Asian handicap legs in my parlay?
Asian handicap markets typically have lower margins (2-3% at sharp books) compared to 1X2 markets (4-6%). Using AH legs in parlays reduces the compounding vig effect. However, half-win/half-loss results on quarter-ball handicaps complicate parlay settlement — check your book's rules.
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