About

lotto.ozbox is an independent site that explains the odds of Australia's national lotto games. It doesn't sell tickets, give tips or predict numbers. Nobody can, because every combination is equally likely.

How the odds are calculated

Every figure is computed in your browser from the game rules (how many balls, how many are drawn and what each division needs) using exact combinatorics. When the site is built, every division is checked against the odds published by the lottery operators. Published odds are rounded, so the last digit can differ by one.

Game rules change from time to time. The odds were last reviewed in November 2026. If you spot a change, please let us know.

Not affiliated

This site has no connection with The Lott, Lotterywest or any other lottery operator. Game names are used only to identify the games. Always check official rules and results with the operator.