Parlay Calculator

A parlay (accumulator) combines several bets into one: every leg must win. This multiplies the decimal odds of each leg, shows your payout and profit, and — crucially — the combined probability you actually need.

Stake ($)

Leg 1 odds

Leg 2 odds

Leg 3 odds

5.73

Combined odds

17.5%

Implied probability

$286.50

Total payout

+$236.50

Profit

HOW IT WORKS

The method.

What it does

Combined odds = the product of every leg. Payout = stake × combined odds. The implied probability (1 ÷ combined odds) shows how unlikely the whole ticket really is.

Why the odds balloon

Each leg multiplies the price, so payouts look huge — but so does the risk. Three 1.91 legs already need all three to land at ~14% combined probability.

The discipline angle

Parlays carry a bigger book margin than singles (margins compound too). Tracking their CLV and hit rate honestly is the only way to know if they're worth it.

Educational only — not betting advice. Calculators and simulations are illustrative; past results and simulated outcomes don’t guarantee future returns. Bet responsibly.

FAQ

Questions, answered.

You multiply the decimal odds of every leg together. Three legs at 1.91, 2.00 and 1.50 give combined odds of 5.73 — but every leg must win, so the combined probability is just 1 ÷ 5.73 ≈ 17%.

Parlays offer big payouts but carry a bigger bookmaker margin than singles, because each leg's margin compounds. They're high-variance; the honest way to know if yours are worth it is to track their CLV and hit rate over time.

None — they're the same bet under different names. 'Parlay' is the US term and 'accumulator' (or 'acca') is the UK/European term for combining multiple selections into one wager where all must win.