Multi Bet Calculator (Parlay Calculator)
Add the odds for each leg of your multi and see the combined odds, total payout, profit and the real implied probability of the whole thing landing. Works for any sport and any Australian bookmaker.
Build your multi
How multi odds are calculated
Multiply the decimal odds of every leg together. Three legs at $1.50, $1.80 and $2.00 = 1.5 × 1.8 × 2.0 = $5.40 combined. The payout grows fast, but so does the chance of the whole bet failing: those three legs individually imply 67%, 56% and 50%, but the multi lands only 18.5% of the time.
That gap between how likely each leg feels and how likely the combination is explains why multis are the most profitable product bookmakers sell. Every leg you add multiplies the bookmaker's margin too - a 5% margin per leg compounds to roughly 15% over three legs and 25% over five.
| Legs (all at $1.50, i.e. 67% each) | Combined odds | Chance of landing |
|---|---|---|
| 2 legs | $2.25 | 44% |
| 3 legs | $3.38 | 30% |
| 4 legs | $5.06 | 20% |
| 5 legs | $7.59 | 13% |
| 8 legs | $25.63 | 3.9% |
Making multis less of a donation
If you bet multis for entertainment, nothing wrong with that - just size stakes accordingly. If you want them closer to break-even: keep them to 2-3 legs, build them from individually positive-value selections (check each leg with the value checker), and avoid adding short-priced "sure thing" legs that add margin but barely move the payout. Our model's highest-confidence NRL picks each week are in this week's tips.
More free betting tools
FAQ
How do I calculate a multi bet payout?
Multiply all the decimal odds together, then multiply by your stake. A $20 stake on legs of $1.90 and $2.10 pays 20 × 1.9 × 2.1 = $79.80, for $59.80 profit. The calculator above does this for up to 12 legs.
What happens if one leg of my multi loses?
In a standard multi, one losing leg loses the whole bet. If a leg is voided (abandoned match, scratched player market), most Australian bookmakers recalculate the multi without that leg rather than killing it - check the house rules.
Is a parlay the same as a multi?
Yes. Parlay is the American term, multi (or accumulator/acca in the UK) is the Australian term. Same product: multiple selections that must all win, with odds multiplied together.
Can I hedge a multi with one leg left?
Yes, and it is the most common smart hedge in betting. Back the opposite side of the final leg so you profit either way - the hedge calculator gives you the exact stake.