LotteryLong-Term Jackpot Odds Calculator
A single drawing's jackpot odds don't change no matter how long you've played — but "what's the chance I win at least once if I keep playing for years" is a different, calculable question. This tool answers that one, using real compound probability, not a guess.
Total tickets over this period
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Chance of winning the jackpot at least once
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This uses the standard "at least one success" formula from probability theory: 1 minus the chance of losing every single time. It assumes every ticket is an independent, equally-likely draw — which is true, since each drawing really is independent of every other one. This is a real calculation, not a marketing estimate, but the number is still almost always going to look small: buying more tickets over more years multiplies your chances by a lot in relative terms, while the absolute chance stays tiny in absolute terms, because the starting odds are so extreme. See how lottery odds actually work for why that gap between "relative improvement" and "still very unlikely" matters. The same underlying formula, applied to a whole field of tickets instead of just yours, powers the losing streak calculator — useful for sanity-checking headlines like "Powerball goes 41 drawings without a winner."