Mega Millions Odds Explained
Every lottery ticket buys you one shot at every combination. Here's the full mathematical breakdown of your chances for every Mega Millions prize tier — and honest context on what those numbers actually mean.
Jackpot odds
1 in 302,575,350
Total combinations
About 302.6 million
302,575,350
Overall win odds
1 in 37
any prize, any tier
All Prize Tiers & Odds
Every official prize tier for Mega Millions, with context on what those odds actually look like.
| Tier | Numbers to match | Odds | Typical prize |
|---|---|---|---|
| JackpotJackpot | 5 + Mega Ball | 1 in 302,575,3506× more likely than the chance of being struck by a meteorite in your lifetime | Jackpot (varies, can exceed $1 billion) |
| 2nd Prize | 5 | 1 in 12,607,306about as likely as winning an Academy Award | At least $1,000,000 (before taxes) |
| 3rd Prize | 4 + Mega Ball | 1 in 931,001about as likely as being dealt a royal flush on your first poker hand | Typically $10,000 |
| 4th Prize | 4 | 1 in 38,7924× more likely than the chance of finding a four-leaf clover on your first try | Typically $500 |
| 5th Prize | 3 + Mega Ball | 1 in 14,547about as likely as finding a four-leaf clover on your first try | Typically $200 |
| 6th Prize | 3 | 1 in 6062× more likely than the chance of having identical twins | Typically $10 |
| 7th Prize | 2 + Mega Ball | 1 in 6933× more likely than the chance of having identical twins | Typically $10 |
| 8th Prize | 1 + Mega Ball | 1 in 893× more likely than the chance of flipping heads 5 times in a row | Typically $4 |
| 9th Prize | Mega Ball only | 1 in 37about as likely as flipping heads 5 times in a row | Typically $2 |
How the maths works
Lottery odds come from combinatorics — counting how many ways you can choose a subset of numbers from a pool. The formula is:
C(n, r) = n! / (r! × (n − r)!)
where n = pool size, r = numbers to choose
For Mega Millions, you pick 5 numbers from 1–70 (a pool of 70 numbers):
Then you also pick 1 Mega Ball number from 1–25 (a separate pool of 25 numbers):
Since the two draws are independent, multiply them together:
Each ticket covers exactly one combination, so your jackpot odds are 1 in 302,575,350 — which matches the official published odds of 1 in 302,575,350.
Does buying more tickets help?
Yes — but the improvement is smaller than you might think. Each ticket adds one independent combination to your entry. With n tickets, your jackpot odds become n in 302,575,350:
| Tickets | Jackpot odds | Approximate cost |
|---|---|---|
| 1 | 1 in 302,575,350 | ~$2 USD |
| 5 | 1 in 60,515,070 | ~$10 USD |
| 10 | 1 in 30,257,535 | ~$20 USD |
| 50 | 1 in 6,051,507 | ~$100 USD |
| 100 | 1 in 3,025,754 | ~$200 USD |
Frequently asked questions
- What are the odds of winning the Mega Millions jackpot?
- The odds of winning the Mega Millions jackpot are 1 in 302,575,350. That means for every ticket you buy, you have a 1 in 302,575,350 chance of matching all numbers correctly.
- How are Mega Millions odds calculated?
- Mega Millions odds are calculated using combinatorics — specifically the combination formula C(n,r) = n! / (r! × (n-r)!). You pick 5 numbers from 1–70, giving C(70,5) = 12,103,014 combinations, multiplied by C(25,1) = 25 for the Mega Ball ball. The total is 302,575,350 possible outcomes.
- Does buying more Mega Millions tickets improve my odds?
- Yes — each additional ticket gives you one extra combination. If the jackpot odds are 1 in 302,575,350 and you buy 10 tickets, your odds become roughly 10 in 302,575,350, or 1 in 30,257,535. That said, even 10 tickets still leaves you with an astronomically small chance of winning the jackpot.
- What are the best numbers to pick for Mega Millions?
- There are no "best" numbers. Every combination has an identical probability of being drawn. Quick picks (random numbers) are statistically equivalent to any hand-picked combination. This generator uses cryptographically strong randomness so your picks are as random as possible.
- What is the overall chance of winning any prize in Mega Millions?
- The overall odds of winning any prize in Mega Millions are approximately 1 in 37, which accounts for the lowest prize tier. Most prizes are small fixed amounts rather than the jackpot.
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