Lottery Calculators
Break-Even Lottery Spending Calculator
Calculate the expected value of a lottery ticket and the prize amount needed to break even given the odds and ticket cost.
Consecutive Numbers Probability Calculator
Calculate the exact probability of a fully consecutive number combination being drawn in a lottery game.
Lottery Annuity vs Lump Sum Calculator
Compare a lottery lump sum payout against the present value of a 30-year annuity using your own discount rate assumption and jackpot size.
Lottery Combination Calculator
Calculate combinations or permutations for any pool size and pick count, with a reference table showing how the two counts diverge.
Lottery Expected Value Calculator
Calculate the expected value of a lottery ticket from jackpot odds, jackpot size, ticket cost, and expected value of smaller prizes.
Lottery Jackpot Split Calculator
Calculate each winner's pre-tax share when a lottery jackpot is split evenly among multiple winning tickets in a single drawing.
Lottery Number Gap Calculator
Analyze the spacing gaps between drawn lottery numbers for statistical curiosity, not prediction.
Lottery Odds Calculator
Calculate exact lottery odds for any pick-size and pool-size combination using the combinations formula, including an optional bonus ball pool multiplier.
Lottery Pool Share Calculator
Calculate your share of a lottery jackpot based on your contribution to a group office pool.
Lottery Syndicate Payout Calculator
Calculate your payout from a lottery syndicate win based on the number of shares you own out of the total syndicate.
Lottery Tax Calculator
Calculate net lottery winnings after federal and state tax withholding, using the standard 24 percent federal withholding rate as a default rate.
Lottery Ticket Annual Cost Calculator
Calculate your annual and multi-year cumulative spending on lottery tickets based on weekly purchase habits.
Mega Millions Odds Calculator
Calculate exact Mega Millions jackpot odds using the official 70 white ball and 25 Mega Ball pool sizes, scaled by tickets purchased.
Multi-Draw Win Probability Calculator
Calculate the cumulative probability of winning at least once across multiple lottery draws or entries.
Number Frequency Calculator
Tally how often each number appears in a set of past lottery draws you provide, ranking the most and least frequent numbers entered.
Powerball Odds Calculator
Calculate exact Powerball jackpot odds using the official 69 white ball and 26 Powerball pool sizes, scaled by tickets purchased.
Raffle Ticket Odds Calculator
Calculate your exact odds of winning a raffle based on the number of tickets you hold and total tickets sold.
Scratch Ticket Odds Calculator
Calculate scratch-off ticket odds and win probability from the total tickets printed and the number of winning tickets in that print run.
Second-Chance Drawing Odds Calculator
Estimate your odds of winning a second-chance drawing prize based on your entries and the total entry pool.
Shared Jackpot Probability Calculator
Calculate your share of a jackpot if it's split among multiple winning tickets with the same numbers.
The Odds Are Not All Equally Bad
"The lottery" is not one game with one set of odds — jackpot draws, scratch tickets, and multi-state games all carry wildly different probabilities of winning something, and understanding that difference is more useful than any "system." These ten calculators cover odds, expected value, and payout math.
How Odds Compare Across Games
| Game | Approximate Jackpot Odds |
|---|---|
| Powerball | 1 in ~292 million |
| Mega Millions | 1 in ~303 million |
| Typical state scratch ticket (top prize) | Often 1 in a few million or better, varies by game |
Scratch tickets and smaller in-state games generally offer meaningfully better top-prize odds than the massive multi-state jackpots, even though the jackpot headline number gets all the attention. The Lottery Odds Calculator and Lottery Expected Value Calculator put a specific game's numbers side by side.
Popular Lottery Calculators
- Lottery Annuity vs Lump Sum Calculator — compares total payout value between a 30-year annuity and an immediate lump sum.
- Lottery Tax Calculator — estimates federal and state tax withholding on lottery winnings.
- Lottery Combination Calculator — calculates the total number of possible number combinations for a given game format.
Related: Casino & Gambling Calculators for broader gambling odds.