Generate random numbers, dice rolls, coin flips and more
Truly random numbers are needed for a wider range of tasks than most people expect: picking lottery numbers, randomly assigning teams, generating test data, running statistical simulations, making impartial decisions, and seeding games or creative processes. This random number generator produces cryptographically secure random integers or decimal numbers within any range you specify. Set the minimum and maximum, choose how many numbers to generate at once, and optionally require no duplicates for draw-style selections such as picking 6 numbers from 1-49. All randomness comes from the browser's Web Crypto API, not a predictable mathematical formula, ensuring genuine unpredictability. Consider a teacher who needs to cold-call students fairly — by entering 1 through 30 and generating a single number, every student has an equal chance with no unconscious bias. A board game night host deciding who goes first can generate a number for each player rather than hunting for a die. A software developer stress-testing a payment system might generate hundreds of unique transaction IDs in a specified range to populate a staging database, avoiding the patterns that hand-crafted test data often introduces. These everyday scenarios all demand randomness that is truly impartial and not reproducible from a known starting seed. Teachers, event organizers, researchers running Monte Carlo simulations, and developers writing unit tests all benefit from having a reliable, no-setup random number source available in any browser. Because all computation happens locally in your browser using the Web Crypto API, no numbers are sent to any server — your inputs and results stay entirely private on your device. There is nothing to install, no account to create, and no usage limits. Whether you need one number or a hundred, integers or decimals, a narrow range or one spanning millions, this tool delivers unbiased results instantly.