Lottery Odds Calculator

Calculate exact lottery jackpot odds. See Mega Millions and Powerball probabilities.

Jackpot Odds

1 in 302,575,350

Odds Breakdown

Jackpot (all + bonus)1 in 302,575,350
Match 4 + bonus1 in 37,240
Match 3 + bonus1 in 582
EV per $2 ticket$0.00

Use the Lottery Odds Calculator above to calculate your results. Enter your values and see instant results — all calculations run in your browser.

Disclaimer: This calculator is for informational purposes only and does not constitute tax, financial, or legal advice. Results are estimates based on the information you provide and current rates. Always consult a qualified tax professional or financial advisor for advice specific to your situation.

How It Works

Ever wonder what your real chances are of hitting that life-changing lottery jackpot? Our Lottery Odds Calculator precisely determines your probability of winning Mega Millions or Powerball, giving you a clear picture of just how steep those odds really are. For instance, the Mega Millions jackpot for January 1st, 2026, could be an estimated $300 million, while Powerball for the same date might reach $250 million.

This calculator uses the fundamental principle of combinations (nCr), where 'n' is the total number of items to choose from, and 'r' is the number of items you must select correctly. For lotteries like Mega Millions and Powerball, we calculate the combinations for the main balls and then multiply that by the combinations for the bonus ball, as these are independent events. The resulting number represents the total possible unique combinations, and your odds of winning the jackpot are 1 in that number.

While it's fun to dream, remember that buying more tickets increases your odds, but only marginally; the probability remains astronomically small. Avoid 'lucky' number schemes or patterns, as each draw is independent and entirely random, making all number combinations equally likely (or unlikely) to be drawn. A common mistake is to confuse the odds of winning any prize with the odds of winning the jackpot, which are vastly different.

Example: Powerball Jackpot Odds

  1. 1 Let's calculate the odds of winning the Powerball jackpot, assuming the standard game rules for 2026: 5 white balls chosen from 69, and 1 red Powerball chosen from 26.
  2. 2 First, we calculate the combinations for the white balls: C(69, 5) = 69! / (5! * (69-5)!) = 11,238,513. Then, we calculate the combinations for the red Powerball: C(26, 1) = 26! / (1! * (26-1)!) = 26. Finally, we multiply these two results: 11,238,513 * 26.
  3. 3 The exact odds of winning the Powerball jackpot are 1 in 292,201,338.
  4. 4 This means for every 292,201,338 unique ticket combinations possible, only one will match all six numbers. To put this in perspective, you are significantly more likely to be struck by lightning or attacked by a shark than to win the Powerball jackpot.

Source: BLS · Last updated: April 2026

Frequently Asked Questions

What are the odds of winning Mega Millions?
The odds of winning the Mega Millions jackpot are approximately 1 in 302.6 million. You must match all 5 white balls (1-70) plus the Mega Ball (1-25). Smaller prizes have much better odds.
What are the odds of winning Powerball?
The odds of winning the Powerball jackpot are approximately 1 in 292.2 million. You must match 5 white balls (1-69) plus the Powerball (1-26). The odds of winning any prize are about 1 in 24.9.
Does buying more lottery tickets increase your odds?
Buying more tickets increases your odds proportionally but the improvement is negligible. Buying 100 tickets changes your Powerball odds from 1 in 292 million to 100 in 292 million (still 1 in 2.9 million). The expected return per dollar spent remains deeply negative.