Lottery Calculator — Odds, Taxes & Payouts

Instantly calculate your exact odds for every Powerball and Mega Millions prize tier. See the real math behind jackpot expected value.

Calculate exact odds of winning the Powerball jackpot (1 in 292,201,338) or Mega Millions (1 in 290,472,336).

View odds and prizes for all 9 Powerball and 9 Mega Millions prize levels, from $4 to the jackpot.

See the expected return per ticket based on current jackpot size — including tax and lump-sum adjustments.

Compare the advertised jackpot vs the cash value and after-tax amounts for your state.

Enter how many tickets you plan to buy to see your combined probability of winning any prize.

Open the calculator and start running numbers instantly.

How to Calculate Lottery Odds

Use the QuantumLotto.ai odds calculator to understand your real chances of winning

Select Lottery Game
Choose Powerball or Mega Millions from the calculator game selector.
Enter Jackpot Amount
Input the current jackpot or use the auto-filled current jackpot from live data.
Set Number of Tickets
Enter how many tickets you plan to buy to calculate combined odds.
View Results
See odds for every prize tier, expected value per dollar spent, and lump-sum vs annuity comparison.