Games & casino calculators
Random number generators, lottery probability tools, dice and coin simulators, plus full casino simulators — blackjack with animated deals, European roulette with a spinning wheel, a 3-reel slot machine, basic strategy chart, Hi-Lo card-counting trainer, and a poker hand evaluator. All instant, no signup, no tracking.
About these tools
All five tools run in your browser — nothing you type or paste leaves the page. The probability math uses the standard hypergeometric distribution (the same formula every lottery operator publishes their odds with), implemented in JavaScript with BigInt to keep precision exact even for combinations in the hundreds of millions.
None of these tools improve your real chances in a fair lottery — every combination has the same probability per draw. They're useful for picking systematically (avoiding popular sequences so you'd share less if you win), understanding the actual odds, and analysing whether a game has shown statistical irregularities.
Math nerds: see also the permutation & combination calculator, probability distributions, and the general probability calculator.
Common questions
Will using these tools improve my chances of winning?
No. Lotteries are designed so every legal combination has equal probability per draw. What these tools can do: help you pick numbers that fewer other people pick (e.g., avoid 1-2-3-4-5-6 and obvious dates), so if you do win you share with fewer people. They also help you understand the real odds — which are usually much worse than headlines suggest.
Is the random generation truly random?
It uses the browser's crypto.getRandomValues when available — cryptographically secure, the same source used for password generation and TLS keys. Falls back to Math.random on very old browsers. For lottery picks either is more than random enough.
Is your frequency analysis based on real lottery data?
No — we don't fetch live draw data. The frequency tool analyses any draw history you paste in. It comes with a small synthetic sample so you can see the output format; replace it with your real game's published draw history.