How It Works
The Idea
Everyone has "their numbers" — birthdays, lucky picks, numbers they've played for years. WouldIHaveWon lets you find out if those numbers would have actually won anything, across every single draw in Australian lottery history.
What We Check
We have the complete results database for TattsLotto (Saturday Lotto) going back to 1986, covering over 2,000 draws. Each draw includes the winning numbers, supplementary numbers, and full dividend data showing how many winners there were in each division and what they won.
Oz Lotto and Powerball data is being built out and will be available soon.
The Simulation
When you enter your numbers, we check them against every single draw. For each draw, we work out how many of your numbers matched the winning numbers and supplementaries, then compare that against the division rules that were in effect at the time.
The rules have changed multiple times over the decades — the number pool, the division structure, the supplementary rules, and the ticket price have all been updated. We track seven distinct eras for TattsLotto alone, each with its own set of rules, so every draw is checked against the correct criteria for its time.
Adjusted Dividends
This is the important bit. We don't just tell you the published prize for each division — we calculate what you would have actually received if you'd been an additional winner.
Each division's prize pool is split equally among winners. If Division 4 had a $50,000 pool and 2,000 winners, each got $25.00. But if you'd been winner #2,001, the pool would have been split 2,001 ways instead — so your share would have been slightly less. For lower divisions with thousands of winners, the difference is negligible. For Division 1 with just a handful of winners, the difference can be significant.
This gives you the most realistic picture of what you would have actually taken home.
The Cost Tracking
We also track what it would have cost you to play every single draw. Ticket prices have changed over the years — from 25 cents a game in 1972, to 60 cents, then 65, 75, 77, and currently 85 cents. We apply the correct price for each era, so the total cost reflects what you would have actually spent.
The chart shows your cumulative cost vs cumulative winnings over time, so you can see at a glance whether your numbers would have been profitable or (as is almost always the case) a slow drain on the wallet.
Disclaimer
This site is for entertainment purposes only. We are not affiliated with any lottery operator. Results are calculated from publicly available historical draw data and represent our best estimate of adjusted dividends. Actual prizes may have varied. Please gamble responsibly.
If you or someone you know has a gambling problem, please contact Gambling Help on 1800 858 858 or visit gamblinghelponline.org.au.