Random Numbers

Random Number Generator — Generate Numbers Instantly

The Random Number Generator is a free online tool that generates random numbers within any range you specify. Set a minimum and maximum value, choose how many numbers to generate, and select whether to allow duplicates or require unique numbers. The tool uses the browser's cryptographic random number generator (crypto.getRandomValues) for high-quality randomness suitable for games, lotteries, statistical sampling, and decision-making.Beyond basic range generation, the tool offers several customization options: integer or decimal output, custom step values (generate only even numbers, multiples of 5, etc.), sorted or shuffled output, and batch generation of multiple sets. The generated numbers are displayed in a clean list that you can copy with one click. A generation history keeps track of your previous results for reference. The cryptographic random source ensures that the numbers are truly unpredictable and not produced by a deterministic pseudorandom algorithm.Lottery players generate random number combinations. Teachers select random students or create randomized quizzes. Researchers perform statistical random sampling from populations. Game masters generate random encounters, loot, or outcomes for tabletop RPGs. Developers create test data with random values. Decision makers use random selection for fair, unbiased choices when options are equally valid. The tool is also useful for creating random PINs, access codes, and other numerical sequences.Random Number Generator is part of the facilita.tools collection of free utilities. Available in Portuguese, English, and Spanish, optimized for desktop and mobile.