Lottery Odds Calculator
Powerball & Mega Millions Odds Calculator
Real odds of winning, based on official game data
Updated
Use this calculator to see your real odds of winning Powerball, Mega Millions, or other major lottery games, based on official game rules rather than rounded-off estimates. It breaks down the probability of hitting every individual prize tier, not just the jackpot, so you can see exactly how rare a jackpot win is compared to a smaller fixed-dollar prize. Enter how many tickets you buy per draw and over how many weeks to see your expected cost and expected number of wins over that period. It's meant to be an honest, transparent look at the math behind the lottery, not a strategy for beating it.
Quick answer: the odds of winning the Powerball jackpot are 1 in 292,201,338, and the odds of winning the Mega Millions jackpot are 1 in 290,472,336. Use the calculator below for every prize tier.
Prize Tier Breakdown
Over 156 tickets, here are your odds and expected outcomes:
| Match | Prize | Odds (1 in) | Win Chance | Expected Wins |
|---|---|---|---|---|
| 5 + Powerball | Jackpot | 1 in 292,201,338 | < 0.001% | 5.34e-7 |
| 5 | $1,000,000 | 1 in 11,688,053 | 0.001% | 1.33e-5 |
| 4 + Powerball | $50,000 | 1 in 913,129 | 0.017% | 1.71e-4 |
| 4 | $100 | 1 in 36,525 | 0.426% | 0.004 |
| 3 + Powerball | $100 | 1 in 14,494 | 1.1% | 0.011 |
| 3 | $7 | 1 in 580 | 23.6% | 0.269 |
| 2 + Powerball | $7 | 1 in 701 | 20.0% | 0.223 |
| 1 + Powerball | $4 | 1 in 92 | 81.8% | 1.7 |
| Powerball only | $4 | 1 in 38 | 98.4% | 4.1 |
Putting These Numbers in Perspective
Your chance of hitting the jackpot with 156 tickets is less than 0.001%. You'd expect to win the jackpot once every 97.40M weeks of play.
You'll spend $312 over 52 weeks. You'd expect to win any prize about 6.50 times — mostly small $2–$7 wins.
These calculations assume each ticket has independent random numbers. The lottery is truly random — no strategy changes these odds.
Odds Calculator FAQ
Does buying more tickets improve my odds of winning?
Buying more tickets does raise your total probability slightly, but against odds like 1 in 292,201,338 for the Powerball jackpot, even 100 tickets barely move the needle. This calculator shows exactly how small that change really is — it's not a way to improve your odds, just a way to see the real numbers.
What are the real odds of winning the Powerball or Mega Millions jackpot?
Powerball jackpot odds are 1 in 292,201,338 per ticket. Mega Millions jackpot odds are 1 in 290,472,336 per ticket. Odds for smaller prize tiers are much better — the full breakdown by prize tier is above.
Can any number pattern or strategy improve my odds?
No. Lottery drawings are random and independent — no number pattern, "hot" number, or system changes the odds of any future draw. This calculator is a tool for understanding probability, not a strategy, and it's no guarantee of any result.
How is the expected cost on this calculator worked out?
Expected cost multiplies the number of tickets you enter per draw by the game's per-draw ticket price and the number of draws in your chosen time period. It's a straightforward cost projection, not a prediction of winnings.
About Lottery Odds
Lottery odds are determined by the game's number matrix. Powerball requires matching 5 numbers from 1-69 plus 1 Powerball from 1-26, making the jackpot odds 1 in 292,201,338. Mega Millions uses 5 numbers from 1-70 plus 1 Mega Ball from 1-24, with jackpot odds of 1 in 290,472,336.
While the jackpot odds are astronomical, smaller prizes have much better odds. The overall chance of winning any prize in Powerball is about 1 in 24.9, and about 1 in 23 for Mega Millions. However, most "wins" are just $2-$7, often less than the cost of the ticket. Optional add-ons such as Power Play change the size of non-jackpot prizes but not the odds of matching the numbers.
This calculator uses official odds published by the game operators. The odds are mathematical facts — they don't change based on how many people play, what numbers you pick, or how long it's been since the last jackpot was hit. Each draw is an independent random event.
To put those numbers in perspective: 1 in 292 million is a number most people can state but few can really feel intuitively. A commonly cited comparison is that you're roughly 19,000 times more likely to be struck by lightning in your lifetime (about 1 in 15,300 according to National Weather Service estimates) than to win a single Powerball jackpot with one ticket. Buying more tickets improves your odds in direct proportion — 10 tickets give you roughly 10 times the chance of one — but even a meaningfully large number of tickets barely dents odds measured in the hundreds of millions. This is exactly why lottery tickets are best understood as a form of entertainment with a very small, very real chance of a life-changing outcome, rather than as a financial strategy.
It's also worth understanding the difference between "odds of the jackpot" and "odds of winning something." Nearly 1 in 24 tickets wins some prize in Powerball, but the overwhelming majority of those prizes are $4 to $7 — often less than what you spent on the ticket itself. The jackpot tier is a vanishingly small fraction of that overall 1-in-24 figure, which is why the "odds of winning" headline number and the "odds of winning life-changing money" number are, in practice, very different statistics.
How the odds are calculated
Powerball players pick 5 white balls from 69 and 1 red Powerball from 26. There are C(69,5) = 11,238,513 ways to choose the white balls, and multiplying by 26 gives 292,201,338 possible combinations, so the jackpot odds are 1 in 292,201,338 (see the full Powerball odds breakdown). Mega Millions uses 5 numbers from 70 and 1 Mega Ball from 24: C(70,5) = 12,103,014 × 24 = 290,472,336 combinations. See the full Mega Millions odds breakdown.
For any prize tier, the chance of at least one win with n tickets is 1 − (1 − 1/odds)n, and the expected number of wins is n ÷ odds. Those are the two formulas behind every number in the calculator above. Odds were last verified against the official sites for Powerball (August 2026) and Mega Millions (July 2026).