Calculate combined odds and payout for multiple selections (accumulator).
A parlay — also called an accumulator or combo — bundles several selections into one bet. The tool multiplies every leg's odds together to give the combined odds, then shows the total payout from your stake and the combined implied probability. The catch is that every leg has to win: a single miss and the whole bet loses.
A parlay multiplies both the potential payout and the risk, because the legs have to win together. If each leg has a 55% chance, two legs land around 30% and three around 17% — the combined probability drops far faster than the odds suggest is comfortable. Every extra leg also stacks more of the bookmaker's margin on top, so long accumulators are high-variance bets that lose most of the time even when each pick looks fair.
Take three legs at 1.80, 2.00 and 1.50 with a 100 stake. The combined odds are 1.80 x 2.00 x 1.50 = 5.40, so a winning parlay returns 540 (a 440 profit). The combined implied probability is 1 / 5.40 = about 18.5%, meaning all three legs are expected to land together less than one time in five.
Calculate combined odds and payout for multiple selections (accumulator).
A parlay — also called an accumulator or combo — bundles several selections into one bet. The tool multiplies every leg's odds together to give the combined odds, then shows the total payout from your stake and the combined implied probability. The catch is that every leg has to win: a single miss and the whole bet loses.
A parlay multiplies both the potential payout and the risk, because the legs have to win together. If each leg has a 55% chance, two legs land around 30% and three around 17% — the combined probability drops far faster than the odds suggest is comfortable. Every extra leg also stacks more of the bookmaker's margin on top, so long accumulators are high-variance bets that lose most of the time even when each pick looks fair.
Take three legs at 1.80, 2.00 and 1.50 with a 100 stake. The combined odds are 1.80 x 2.00 x 1.50 = 5.40, so a winning parlay returns 540 (a 440 profit). The combined implied probability is 1 / 5.40 = about 18.5%, meaning all three legs are expected to land together less than one time in five.