Australia

Oz Lotto odds — every division, derived

Every figure on this page is calculated from the game's published rules. The operator's own odds page is linked below as verification — but the working is here, on this page.

The combinatorics

A standard entry picks 7 numbers from 47. The number of possible combinations is:

C(47, 7) = 62,891,499

After the 7 winning numbers, 3 supplementary/bonus balls are drawn from the same pool — they create extra divisions but don't change the jackpot odds.

Division odds

DivisionMatchWinning combinationsDerived oddsProbabilityPrizeOperator says
Division 17 main11 in 62,891,4991.590e-8Jackpot pool share1 in 62,891,499
Division 26 main + ≥1 supps211 in 2,994,8333.339e-7Pool share
Division 36 main + 0 supps2591 in 242,8244.118e-6Pool share
Division 45 main + ≥1 supps2,3941 in 26,2703.807e-5Pool share
Division 55 main + 0 supps13,9861 in 4,4970.0222%Pool share
Division 64 main345,8001 in 1820.5498%Pool share
Division 73 main + ≥1 supps887,0751 in 70.91.41%Pool share

"Winning combinations" counts how many of the possible outcomes land in that division. "Operator says" is the operator's published figure — shown so you can check us against them (small differences are their rounding).

Odds of winning any prize

1 in 50.33

Sum of all division probabilities — usually the number the ads quote.

Odds of the top prize

1 in 62,891,499

One standard game. Two games doubles it — and it's still tiny.

How long are these odds? Winning the top prize is about as likely as calling 25.9 coin flips in a row correctly (225.9 62,891,499). If you bought one line every draw, at two draws a week you would expect one top-prize win roughly every 604,726 years.

Sources

Last verified: 2026-08-29