The Oz Lotto odds calculator shows what you’re up against in Australia’s Tuesday game. You choose 7 numbers from 47. The draw takes 7 winning numbers plus 3 supplementaries. Division 1, all seven, is 1 in 62,891,499 per game. Six plus a supplementary is 1 in about 3 million. The free calculator above works out any match, with any number of games and draws.
Oz Lotto odds for every match
Supplementaries come from the same barrel. They only matter for numbers you didn’t match, which is why “6 + supplementary” is so much more likely than all seven.
| Match | Odds per line |
|---|---|
| 7 | 1 in 62,891,499 |
| 6 + supplementary | 1 in 2,994,833 |
| 6 | 1 in 242,824 |
| 5 + supplementary | 1 in 26,270 |
| 5 | 1 in 4,497 |
| 4 + supplementary | 1 in 852 |
| 4 | 1 in 231 |
| 3 + supplementary | 1 in 70.9 |
| 3 | 1 in 27.2 |
For m matches: C(7, m) × C(40, 7 − m) ÷ C(47, 7), then split by whether one of your other numbers is a supplementary. The official prize table says which of these pay.
The long odds, in perspective
62.9 million is a big number. A system entry with more numbers covers more combinations and costs more in proportion, so the odds per dollar don’t change. If you played 20 games every week for 40 years, your chance of Division 1 would still be only about 1 in 1,500.
That’s why the jackpots are huge. Saturday Lotto (6 from 45) is about 7.7 times easier to win, and the Saturday Lotto odds calculator shows the difference. Random picks come from the Oz Lotto number generator.
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