Parlay calculator (accumulator)
Add the odds of each leg in American or decimal format and enter your stake. The calculator multiplies the prices and shows the payout, the profit and the win probability implied by the odds.
What a parlay is
A parlay, called an accumulator or acca in the UK, combines several selections into one bet. The odds multiply, so the payout grows fast, but the parlay wins only if every leg wins. A pushed or void leg counts as 1.00 and the parlay continues without it.
How to use the parlay calculator
- Enter the odds of each leg in American or decimal format.
- Add legs with the “Add leg” button, up to 12.
- Enter your stake.
- Mark a leg as a push if it was voided: its odds become 1.00.
How to read the result
Parlay odds equal the product of all leg odds in decimal. The payout is the stake times the parlay odds, and the profit is the payout minus the stake.
The implied probability of the parlay is 1 divided by its decimal odds. The vig is priced into every leg, so in a five-leg parlay it compounds and costs far more than on a single bet.
How to calculate a parlay by hand
How often tipster parlays actually hit
Parlays posted on X and graded by BetBuddyRank on final scores. The expected hit rate comes from the no-vig odds, ROI from 1-unit stakes.
| Legs | Parlays | Hit rate | Expected | ROI |
|---|---|---|---|---|
| 2 | 553 | 28.2% | 33.4% | −31.4% |
| 3 | 465 | 13.3% | 22.1% | −39.5% |
| 4 | 458 | 8.3% | 13.2% | −59.1% |
| 5 | 306 | 4.9% | 9.1% | −42.9% |
| 6+ | 884 | 0.7% | 3.7% | −78.0% |
What to do next
Long parlays rarely cash, even for strong tipsters. See which cappers on the BetBuddyRank leaderboard beat the market on single picks, and compare tipsters on the Parlays market.
Parlay vs straight bet vs round robin
| Bet type | Wins when | Payout | Risk |
|---|---|---|---|
| Straight bet | The single pick wins | The odds of that pick | Low |
| Parlay | Every leg wins | Product of all odds | High, grows with every leg |
| Round robin | Some of the legs win | Sum of the winning smaller parlays | Medium, the stake is split across combinations |
FAQ
How do you calculate parlay odds?
Convert every leg to decimal odds and multiply them. A three-leg parlay at 1.80, 2.00 and 1.50 has odds of 5.40, so a 100 stake returns 540 if it wins.
What happens to a parlay if one leg pushes?
The pushed leg counts as 1.00 and the parlay is graded on the remaining legs. If only one leg is left, the bet effectively becomes a straight bet.
Why do long parlays lose money over time?
The vig compounds along with the odds. With a margin of about 5% per leg, a five-leg parlay gives up roughly 22% of its expected payout, far more than a single bet.
How many legs can I add?
Up to 12. Sportsbooks rarely take bigger parlays, and the implied win probability of a 12-leg parlay is almost always below 1%.
Is a parlay the same as an accumulator?
Yes. Parlay is the US term and accumulator, or acca, is the UK term for the same bet: several selections that must all win.