Free calculators and comparison tools built on real keno mathematics. No guesswork. Exact probabilities from the hypergeometric formula.
Generate random keno numbers for any state game. Quick pick, hot and cold numbers, balanced spreads, edges, and diagonals.
Generate NumbersExact 1-in-X probability of hitting any number of matches, for any 1–10 spot count. Real hypergeometric math.
Open CalculatorFull payout breakdown by bet size and spot count: expected value, RTP, and house edge across paytables.
Open CalculatorCompare 4-, 6-, 8-, and 10-spot keno side by side: jackpot odds, win rate, RTP, and variance.
Open ToolHow the same bet pays at Massachusetts, Ohio, Oregon, Michigan, Las Vegas, and online, with the best payout highlighted.
Compare PaytablesWhat keno really costs per hour, based on your bet, venue, and pace, with a side-by-side slots comparison.
Calculate CostSave your lucky numbers and print a clean play slip for the bar or counter, with payouts and odds on every slip.
Print My NumbersOne printable page per state: your saved numbers, today's hot, cold and overdue numbers, the paytable, draw times, and a QR code to live results.
Build Your SheetThe same numbers on paper, for when you would rather not hold a phone at the counter. Each sheet prints to a single letter page.
Every catch probability from 1 through 10 spots on one page, plus the blank-ticket and hit-all odds at a glance.
Open Odds CardWhich spot count fits which budget and temperament, so the decision is made before you reach the terminal.
Open Cheat SheetState keno paytables printed side by side, so you can see which game pays best for the spot count you play.
Open ComparisonAll probability calculations use the hypergeometric distribution, the mathematically correct model for keno. We compute results in log-space to handle the extremely large numbers involved (C(80,20) exceeds 3.5 quadrillion) without floating-point errors.
Paytable data is sourced from publicly available lottery and casino information. Always verify current paytables with your state lottery or casino before playing.
Calculations on this page use each game's official published paytable and the exact hypergeometric odds for a 20 of 80 draw. Last verified August 16, 2026. KenoSpots is operated by BoostOps and is not affiliated with any lottery. Spot an error? Tell us.
New: Number History, search every stored draw and see how your numbers have actually done.