Random Number Generator

How does a random number generator work?

SpinGenerator's random number generator uses the browser's crypto.getRandomValues Web Crypto API — the same cryptographic RNG that powers Cloudflare, Mozilla Firefox, and the LastPass password generator — and maps it uniformly across your chosen range (e.g., 1–100, 1–10,000). Every integer in the range has equal probability. Common uses include Powerball-style lottery picks, classroom random-student selection, A/B test sampling, and tabletop RPG damage rolls.

Popular Uses

• Math classroom activities
• Lottery and raffle number selection
• Board game and tabletop randomization
• Statistical sampling
• Random order selection for lists