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 NumbersAll 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.