Oz Lotto Quick Facts
What is Oz Lotto?
Oz Lotto is one of the most popular Australian lottery. The draw takes place each Tuesday at 8.30pm AEST, where 7 main balls and 3 supplementary balls are drawn.
Oz Lotto was introduced on 26 February 1994 and promoted as Australia's first fully national lottery game.
There have been several changes in the game since it was first introduced and the current format is valid as of 11th May 2022.
The starting jackpot is $3 million. The highest jackpot amount was reached in 2012. Originally guaranteed at $100 million, four winners shared a Division 1 pool of $111,972,151.04 in the draw on 6 November 2012.
Players win by matching one of the 7 ways to win. You will need to match all 7 main balls to win the jackpot. The overall odds of winning a prize in the game are 1 in 51.
How to play Oz Lotto?
Select 7 main numbers from 1-47. Match a minimum of 3 main numbers and 1 supplementary number to win a prize. To win a jackpot you have to match all 7 main numbers. Supplementary balls are only considered for when you match 3, 5 or 6 main balls to win the next division prize.
What are the odds to win Oz Lotto jackpot?
|Division||Winning selections||Odds||% of Prize Fund|
|1||Match 7 numbers||1 in 62,891,499||40%|
|2||Match 6 main numbers + 1 supplementary number||1 in 2,994,834||2.2%|
|3||Match 6 main numbers||1 in 242,825||2.6%|
|4||Match 5 main numbers + 1 supplementary number||1 in 26,271||2.0%|
|5||Match 5 main numbers||1 in 4,497||1.6%|
|6||Match 4 main numbers||1 in 182||19.8%|
|7||Match 3 main numbers + 1 supplementary number||1 in 71||31.8%|
The odds of winning Oz Lotto jackpot are not great! As a matter of fact, you are much likely of being struck by lightning (which is one in 12,000) than to win Oz Lotto lottery!
Oz Lotto Odds Calculations
If you ever wondered, why are the odds so sky-high, let's have a look at how exactly are they being calculated.
In every Oz Lotto drawing, 7 white balls are drawn together with 3 supplementary balls, which are not considered when winning the main prize.
Main Balls Odds
There are 47 numbers to be picked from the total pool of the main balls. None of the balls can repeat. To find out how many possibilities are there to pick 7 balls from the pool of 47 balls, we can use this simple combinatorics formula:
(47 * 46 * 45 * 44 * 43 * 42 * 41) / (7 * 6 * 5 * 4 * 3 * 2 * 1) = 62,891,499
That means there are over 62 million ways to pick 7 numbers from total pool of 47 numbers without repeating.
Supplementary Balls Odds
These balls are only considered for lower prize tiers and not considered for the main jackpot prize.
Overall Odds To Win Oz Lotto
To add this all together, we just need to consider the overall odds to win with the Main Balls.
Total odds = 62,891,499
So if you wanted to purchase every possible combination to guarantee you winning the jackpot, you would need to purchase over 62 million tickets!
But the good news is, there are better ways to improve your odds of winning Oz Lotto without spending so much money.
How can I increase my chances of winning the Oz Lotto jackpot?
There are several ways how to increase your chances to win the jackpot, and we specialize in doing just that! You can find all the information to help you win here: How to win Oz Lotto lottery
What are the most common numbers in Oz Lotto?
Please refer to our Oz Lotto statistics page where we provide all the statistics you need including most often drawn single numbers, number pairs, triplets and more.
Where do I get the latest Oz Lotto results?
Oz Lotto Notable changes
18 October 2005 format change
On 18 October 2005, a seventh number was added from the original 6 numbers which greatly increased the odds of winning in Division 1 = jackpot.
11 May 2022 format change
On 11 May 2022 extra 2 balls were added to the pool or 45 main balls making it total of 47 balls to choose from. The overall odds to win the jackpot shot up from 45,379,620 to 62,891,499.