Game Rules & Odds

Odds of Winning Oz Lotto

Division What you need in one game to win Odds based
on 1 Game
Odds based
on 12 Games
Division 1 7 winning numbers 45,379,620:1 3,781,635:1
Division 2 6 winning numbers + 1 or 2
supplementary numbers
3,241,401:1 270,117:1
Division 3 6 winning numbers 180,078:1 15,007:1
Division 4 5 winning numbers + 1 or 2
supplementary numbers
29,602:1 2,467:1
Division 5 5 winning numbers 3,430:1 286:1
Division 6 4 winning numbers 154:1 13:1
Division 7 3 winning numbers + 1 or 2
supplementary numbers
87:1 8:1

Game rules

View the Game Rules for Oz Lotto.

Oz Lotto Probability Formula

Oz Lotto uses the formula: 45c7 = (45 x 44 x 43 x 42 x 41 x 40 x 39)/(1 x 2 x 3 x 4 x 5 x 6 x 7)*

Prize Division What you need in one game to win Formula
*Used to calculate Division One odds of winning. A minimum of 1 game is required to play.
Division 1 7 winning numbers 45c7
Division 2 6 winning numbers + 1 or 2
supplementary numbers
(45c7 / (7c6 x (38c1 - 36c1)))
Division 3 6 winning numbers (45c7 / (7c6 x 36c1))
Division 4 5 winning numbers + 1 or 2
supplementary numbers
(45c7 / (7c5 x (38c2 - 36c2)))
Division 5 5 winning numbers (45c7 / (7c5 x 36c2))
Division 6 4 winning numbers (45c7 / (7c4 x 38c3))
Division 7 3 winning numbers + 1 or 2
supplementary numbers
(45c7 / (7c3 x (38c4 - 36c4)))

Oz Lotto Prize Fund

In accordance with Rules 11.7 and 11.8 of the Rules of Authorised Lotteries, the Prize Fund in each draw of Oz Lotto shall be distributed amongst the Prize Divisions as follows:

(A) For draws conducted on and after 5 May 2007:

Division Percentage
Division 1 40.0%
Division 2 1.7%
Division 3 3.5%
Division 4 1.8%
Division 5 2.1%
Division 6 24.0%
Division 7 26.9%