Free random number generator for picking integers in any range. Set your min and max, click Generate, and get an instant result. Perfect for games, raffles, giveaways, classroom activities, and everyday decisions.
How does the Random Number Generator work?
Setting the range
Select the range of numbers you want to generate from. For example, to generate a number between 1 and 10 set MIN to 1 and MAX to 10. You can use any range: 1–100, 200–1000, −50–50, and so on. Click the Generate button to get a random number instantly.
Generation algorithm
Numbers are generated with Math.floor(Math.random() * (max − min + 1)) + min. Math.random() produces a cryptographically non-secure float in [0, 1), which is sufficient for games, giveaways, decisions, and everyday use.
History of randomisation
The history of randomisation goes back thousands of years. Among the oldest and most famous methods is the roll of dice — still used in board games today. In the gambling industry, randomisation powers roulette and slot machines. Physical methods such as radioactive decay produce truly unpredictable results. Modern computers use algorithmic pseudo-random number generators that produce long sequences of numbers with a statistically random distribution.
Privacy
Generated numbers are not stored in any database and cannot be revisited. All generation happens locally in your browser — no data is sent to any server.
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