Select 6 numbers and it'll go through every single Lotto draw to calculate what you'd have won to date if you'd played the very same numbers in every draw since the start - Saturday 19th November, 1994. That's 1,872 draws, including Wednesdays.
Please note that any prizes for 4 numbers or more will be calculated using the National Lottery's estimated prize breakdown table below; I simply don't have enough data to calculate exact prizes :(
|Numbers matched||Estimated prize||Odds of winning|
|6 main numbers (jackpot)||£2,000,000||13,983,816|
|5 main numbers plus bonus ball||£100,000||2,330,636|
|5 main numbers||£1,500||55,492|
|4 main numbers||£62||1,033|
|3 main numbers||£10||57|
I get the draw data from Richard K. Lloyd's website, a thoroughly excellent resource for all things lottery-related.